◀▶
Green Building Simulation

Building Simulation at the Highest Level

We support you with CFD simulation, energy building and fire simulation.

CFD EnergyPlus FDS OpenFOAM Radiance ETTV
Navier-Stokes Equation
Energy Equation
Momentum Equation
Current Project Stadium: Consulting & Simulation Simulated with TIAN Building Engineering

Our Services

Maximize comfort. Minimize costs. Guarantee safety.

Many consider CFD simulation a luxury. Our experience from over 150 projects shows the opposite. Every client was ultimately grateful for having simulated. Designs were validated, errors detected early, and costly remedial work avoided.

The attitude “We prefer to build before the simulation shows that the design doesn’t work” is no longer sustainable in times of scarce resources and rising construction costs. Simulation is not a cost center. It provides planning reliability and especially saves operating costs.

  • ◆ Ventilation verification for shooting ranges according to shooting range regulations
  • ◆ Thermal comfort according to DIN EN ISO 7730 and ASHRAE 55 as verification for DGNB, LEED, BNB and other certificates
  • ◆ Cleanroom testing with particle simulation and verification of HVAC system effectiveness
  • ◆ Preliminary verification of temperature compliance and stratification in complex spaces such as atria or high-bay warehouses
  • ◆ Comfort verification for offices and indoor spaces using PMV, PPD, draft sensation or air residence time
  • ◆ Verification of effectiveness and requirements of HVAC systems in enclosed spaces using CFD simulation
  • ◆ Outdoor airflow testing using artificial wind and outdoor comfort analyses according to ISO 7243 and ISO 7933
Thomas Tian - Managing Director Germany, TIAN Building Engineering Thomas Tian Managing Director Germany & Founder
Dr. Alex Lee - Managing Director Singapore, TIAN Building Engineering Singapore Dr. Alex Lee Managing Director Singapore

Why TIAN Building Engineering?

« Simulation doesn’t have to be expensive. »

As a specialized engineering firm for building simulation, we advise architects, developers and planners on the energy and airflow optimization of their projects. With over 15 years of experience and more than 150 projects worldwide, we combine scientific precision with practical consulting.

◆
In-House Software Our own simulation tools: developed from practice for practice
◆
Projects Worldwide International experience: from Berlin to Singapore
◆
Validated Software Simulation according to VDI 6016: standards-compliant and reliable

CFD Simulation

CFD analyses for optimal indoor airflow, ventilation and thermal comfort in buildings.

Learn more →

Building simulation

Dynamic building simulation for energy demand, indoor climate and daylight. Compare design options for new and existing buildings with TIAN.

Building simulation →

Fire Simulation

Simulate smoke and heat propagation for safe escape and rescue route planning.

Learn more →

Measurement Technology

Precise on-site measurements and airflow visualization with fog machines for simulation validation.

Learn more →

Request Project

Contact us directly for a non-binding consultation.

Berlin ☎ +49 30 20 84 97 98 ✉ info@building-engineering.de Singapore ☎ +65 984 39 160 ✉ info@building-engineering.sg

How We Work

From the initial inquiry to the finished result: transparent and efficient.

01

Initial Consultation & Requirements Analysis

We analyze your project, define the simulation objectives and create a tailored proposal: free of charge and non-binding.

02

Model Creation

Based on your planning documents, we create the 3D simulation model using state-of-the-art tools such as OpenFOAM, EnergyPlus or FDS.

03

Simulation & Calculation

We perform the simulation: whether airflow, thermal, daylight or fire. Precise results through validated calculation methods.

04

Evaluation & Report

You receive a detailed simulation report with visualizations, recommendations for action and concrete optimization suggestions.

05

Consulting & Support

Upon request, we accompany you through to implementation: with on-site follow-up measurements and continuous consulting during the construction phase.

150150 + Projects
1515 + Years Experience
100100 + Satisfied Clients
20002000 + Simulations

Selected Projects

An excerpt from our portfolio of successful simulation projects worldwide.

Ctrl + Scroll to zoom • Click marker to show projects
Wind/CFD Berlin, DE 08/2026

Panorama Adenauer Platz

Analysis of box-type double windows and cavity temperatures for shading motor design using CFD simulation

Wind CFD
Wind/CFD Berlin, DE 01/2026

Erweiterungsbau Bundesumweltministerium

Wind analysis and CFD simulation for the extension building

Wind CFD
CFD Frankfurt, DE 11/2025

NION Frankfurt

CFD simulation for innovative building concept

OpenFOAM CFD
Thermal/CFD Germany 09/2025

Cellforce-Group Rückkühler

Thermal simulation and CFD analysis for recooling system

Thermal CFD
CFD München, DE 08/2025

Konzerthaus München

CFD simulation for optimal indoor air quality

OpenFOAM CFD
CFD/Facade Berlin, DE 06/2025

Adidas Flagship Store Berlin

CFD and facade analysis for the flagship store

CFD Facade
Wind Hannover, DE 11/2024

Leibniz Universität Hannover

Wind simulation for university building

Wind OpenFOAM
CFD Berlin, DE 10/2024

Berlin Tegel Klassenzimmer

CFD simulation for optimal indoor climate in classroom

OpenFOAM CFD
CFD Berlin, DE 09/2024

Oberschule am Rollberg Berlin

Airflow analysis for the school ventilation concept

OpenFOAM CFD
CFD Augsburg, DE 08/2024

Theater Augsburg Erweiterungsbau

CFD simulation for the theater extension building

OpenFOAM CFD
CFD Jena, DE 11/2023

MAN PowerStation Jena

CFD analysis for power plant facility

CFD Industry
CFD Berlin, DE 10/2023

Schießbahnanlage BKA Berlin

CFD simulation for BKA shooting range facility

CFD OpenFOAM
CFD Berlin, DE 09/2023

Bundesumweltministerium BMU

CFD simulation for the Federal Ministry for the Environment

CFD OpenFOAM
CFD Saxony, DE 08/2023

Schießbahnanlage Sächsische Polizei

CFD simulation for shooting range facility

CFD OpenFOAM
CFD Marburg, DE 07/2023

Präperationssaal Uni Marburg

CFD analysis for the university preparation hall

CFD Medical
CFD München, DE 06/2023

OpenSpace-Büro Marienhöfe

CFD simulation for open-space office concept

OpenFOAM CFD
CFD München, DE 05/2023

Großraumbüro Stadtwerke München

Airflow optimization for open-plan office

OpenFOAM CFD
Thermal/CFD Coburg, DE 04/2023

Globe Theater Coburg

Thermal simulation and CFD for new theater building

Thermal CFD
Building/Wind/CFD Berlin, DE 05/2025

KaDeWe

Building, wind and CFD simulation for the department store

Wind CFD
Building/Thermal Germany 04/2025

Industriehalle Segro

Building and thermal simulation for industrial hall

Building Thermal
Thermal/CFD Berlin, DE 04/2024

OP-Saal Vivantes

Thermal and CFD simulation for operating room

Thermal Medical
CFD Frankfurt, DE 03/2023

MAN PowerStation Frankfurt

CFD analysis for power plant facility Frankfurt

CFD Industry
CFD Berlin, DE 02/2023

Berliner Zoo Nilpferdhaus

CFD simulation for the hippo house at Berlin Zoo

OpenFOAM CFD
Building Berlin, DE 11/2022

Akademie der Künste

Building simulation for the Academy of Arts Berlin

Building Culture
Building Berlin, DE 10/2022

Landesbank Berlin

Building simulation for Landesbank Berlin

Building CFD
Building Berlin, DE 09/2022

Abgeordnetenhaus

Building simulation for the Berlin House of Representatives

Building CFD
Building Berlin, DE 08/2022

Umweltbundesamt

Building simulation for the Federal Environment Agency

Building CFD
CFD Germany 07/2022

Pflanzenkulturhalle IPK

CFD simulation for plant culture hall

OpenFOAM CFD
CFD Chemnitz, DE 06/2022

MAN Powerstation Chemnitz

CFD analysis for power plant facility Chemnitz

CFD Industry
CFD Dresden, DE 05/2022

Messehallen Dresden

CFD simulation for the Dresden exhibition halls

OpenFOAM CFD
CFD Berlin, DE 04/2022

Mauerpark Berlin

CFD simulation for open space planning Mauerpark

CFD Wind
Building/CFD Petershagen, DE 06/2024

Schule Petershagen

Building and CFD simulation for new school building

Building CFD
Building/Thermal/Daylight Berlin, DE 05/2024

National Galerie 20

Holistic simulation: building, thermal, airflow, daylight

Daylight Thermal
Building/CFD Berlin, DE 02/2025

Hello Fresh

Building and CFD simulation for company headquarters

Building CFD
Thermal/CFD NRW, DE 01/2023

Historisches Museum NRW China

Thermal and CFD simulation for museum exhibition

Thermal Museum
Airflow/Wind/CFD Berlin, DE 11/2021

GALERIA Kaufhof Alexanderplatz

Airflow and wind simulation for department store

Wind CFD
Building/CFD Berlin, DE 09/2021

Bauhausmuseum Berlin

Building and CFD simulation for new museum building

Building Museum
CFD Potsdam, DE 07/2021

Museum Barberini

CFD simulation for Museum Barberini

OpenFOAM Museum
Airflow/Wind/CFD Düsseldorf, DE 05/2021

GALERIA Kaufhof Düsseldorf Kö

Airflow and wind simulation for department store

Wind CFD
Building/CFD Berlin, DE 03/2021

Unter den Linden 50

Building simulation for historic building

Building CFD
Airflow/Wind/CFD Aachen, DE 01/2021

GALERIA Kaufhof Aachen

Airflow and wind simulation for department store

Wind CFD
CFD Berlin, DE 11/2020

Schießbahnanlage Berliner Polizei

CFD simulation for Berlin Police shooting range facility

CFD OpenFOAM
Building Berlin, DE 01/2025

Zalando Headquarter

Building simulation for the Zalando Headquarter Berlin

Building CFD
CFD Regensburg, DE 09/2020

Präperationssaal Vkl Regensburg

CFD analysis for preparation hall

CFD Medical
Thermal Berlin, DE 06/2020

CHINA CLUB Hotel ADLON

Thermal simulation for Hotel Adlon China Club

Thermal Hotel
Building Berlin, DE 03/2025

EDGE East Side Berlin

Building simulation for EDGE East Side Berlin

Building Office
Building Berlin, DE 03/2024

Tegel TXL

Building simulation for Tegel project

Building Airport
Building/CFD Germany 02/2024

Jihong School

Building and CFD simulation for school project

Building School
Thermal/CFD Switzerland 01/2024

Shopping Mall XXXLutz

Thermal and CFD simulation for shopping mall

Thermal Retail
Building/Thermal/CFD Minsk, BY 03/2020

Museum am Brauhausberg Minsk

Building, thermal and CFD simulation for museum

Building Museum
CFD Doha, QA 11/2019

National Museum of Qatar

CFD simulation for the National Museum of Qatar

OpenFOAM Museum
Thermal/CFD Singapore 07/2024

Rückkühler Produktionsgebäude

Thermal and CFD simulation for recooling facility

Thermal CFD
CFD Singapore 08/2024

Tan Tock Seng Hospital

CFD simulation for hospital in Singapore

CFD Medical
CFD Singapore 05/2024

Facebook Data Center

CFD simulation for data center

CFD Data Center
CFD Singapore 03/2024

Bürogebäude UP!

CFD simulation for office building in Singapore

CFD OpenFOAM
CFD Singapore 01/2024

Mandai Cavern

CFD simulation for underground facility

CFD OpenFOAM
Wind/CFD Singapore 09/2023

Bombardier Hangar

Wind and CFD simulation for aircraft hangar

Wind CFD
CFD Singapore 06/2023

SJ Campus

CFD simulation for campus building

CFD OpenFOAM
CFD Netherlands 03/2022

NHS Luchtgordijnen

CFD simulation for air curtain systems

CFD OpenFOAM
CFD England 01/2022

MAN Powerstation Statera

CFD analysis for power plant facility in England

CFD Industry
Engineering knowledge

Practical knowledge for CFD and building simulation

Detailed articles on recurring questions from architects, building services planners and clients. With methods, assessment criteria and practical applications.

TIAN Engineering

Assess cold downdraught at glass facades reliably

CFD analysis of cold downdraught at tall glass facades: assess air velocity, draught, facade projections, convectors and thermal comfort.

Read technical article → TIAN Engineering

Control draught at doors and revolving entrances

CFD analysis of entrance draught and cold-air infiltration through doors, vestibules and revolving doors: assess wind pressure, air curtains, comfort and heat loss.

Read technical article → TIAN Engineering

CO₂ ventilation analysis for schools and classrooms

Indoor air quality and CO₂ ventilation analysis for schools and classrooms. Compare closed, tilted and fully open windows and assess air change, temperature and draught.

Read technical article → TIAN Engineering

Place dry coolers efficiently and prevent hot air recirculation

CFD simulation for dry coolers. Assess hot air recirculation, intake temperatures, equipment placement, heat rejection and efficiency.

Read technical article → TIAN Engineering

Assess the performance of window and facade systems

CFD flow and thermal analysis for box-type double windows, double-skin facades and ventilated glass facades: air exchange, heat build-up, pressure conditions and opening effectiveness.

Read technical article → TIAN Engineering

Wind analysis for robust blind and shading control

CFD wind analysis for facades, wind sensors and shading control: control zones and transfer matrices for external blinds, BMS and building automation.

Read technical article →

Frequently Asked Questions

Answers to the most important questions about our services.

Small simulations start from as little as 2,500 € per variant: depending on effort and complexity. The exact costs depend on the project size, number of variants and desired level of detail. Contact us for a non-binding quote.
Depending on the project scope, typically 2 to 4 weeks from model creation to the finished report.
Building simulations are always worth it: they provide planning reliability, reduce construction costs and enable targeted optimizations. The common approach “We prefer to build and skip simulations because it has always been done this way” can end up costing significantly more than the simulation itself. Early simulations avoid expensive remedial work and late changes during the construction phase.
We rely on validated simulation software and simulate according to VDI 6016. Our calculations comply with recognized standards and guidelines. Additionally, we develop our own in-house software specifically tailored to the requirements of building simulation.
Yes, we have offices in Berlin and Singapore and manage projects worldwide.
Yes, we perform precise on-site measurements and additionally use fog machines to visualize airflow patterns. This allows us to validate our simulation results directly on site and demonstrate them to you visually.
Yes, our simulations can be used as evidence for expert assessments. The calculations are performed according to recognized standards and guidelines (including VDI 6016) and are therefore admissible for expert evaluation. This is particularly frequently applied to shooting ranges, where our simulations serve as verification for HVAC systems and pollutant dispersion.

Clients and partners who trust us

A selection of clients and planning partners who work with us on simulation, green building and technical verification.

Surbana Jurong Atelier Ten EGS-plan TU Steinfurt Ampromech GENIUS VT Helfrich Ingenieure Lemon Consult Müller-BBM BBR Berlin ALARA-Lukagro GSE Berlin SIB Sachsen agn Max Dudler ZWP SBL Neubrandenburg Union Investment pin Berlin MAN Energy Solutions SE

News & Newsletter

Updates from TIAN Building Engineering and insights from our international projects.

1 / 5
TIAN Building Engineering exhibition booth featuring BIM HVACTool at SMEs Go Digital Day in Singapore
· Exhibition · SMEs Go Digital Day · Singapore

Successful showcase at SMEs Go Digital Day in Singapore

TIAN Building Engineering successfully presented its services for the building sector at SMEs Go Digital Day on 13 October 2026 at Suntec Singapore. The event was organised by the Infocomm Media Development Authority (IMDA).

Our showcase centred on BIM HVACTool for CFD simulations, thermal comfort, facade analysis, and fire and smoke simulations. We demonstrated how BIM models can be integrated into simulation workflows to assess building performance and support informed design decisions.

Open official event website →
Engineers and students after the CFD training at Taylor's University in Kuala Lumpur
· Training · CFD · Green Building Simulation · Taylor's University · Kuala Lumpur

Successful CFD training at Taylor's University in Kuala Lumpur

We have once again successfully trained engineers and students at Taylor's University in practical CFD and green building simulation.

Through hands-on exercises with FlowSIM Pro and OpenFOAM, participants connected fundamental knowledge with real simulation workflows. Thank you to Taylor's University and everyone who took part for their strong interest and active exchange.

CFD teaching and Green Building Simulation at Thai Nguyen University
· Teaching · CFD · Green Building Simulation · Thai Nguyen University

TIAN Building Engineering welcomes Thai Nguyen University to CFD and Green Building Simulation

We successfully convinced another university of how important CFD and Green Building Simulation will be for the future of building design.

Welcome, Thai Nguyen University. Together we are strengthening education, knowledge transfer and practical simulation workflows for sustainable buildings.

TIAN Building Engineering and Taylor University partnership for Green Building Simulation
· Partnership · Green Building Simulation · Taylor University

TIAN Building Engineering and Taylor University launch partnership for Green Building Simulation

TIAN Building Engineering and Taylor University are entering into a partnership to connect research, education and practical applications in Green Building Simulation more closely.

The collaboration focuses on energy-efficient buildings, indoor air quality, thermal comfort and simulation-driven planning for sustainable building projects.

TIAN Building Engineering as Gold Sponsor of Indoor Air 2026 in Singapore
· Sponsorship · Indoor Air 2026 · Singapore

TIAN Building Engineering supports Indoor Air 2026 as a Gold Sponsor

We are pleased to support Indoor Air 2026 in Singapore as a Gold Sponsor. The conference brings together research, engineering and practice around healthy indoor environments, air quality and resilient buildings.

Indoor Air 2026 takes place from 14 to 18 June 2026 in Singapore.

Open official conference website →

Contact

Do you have questions or need a quote? Contact us.

Our Offices

TIAN Office Berlin

🇩🇪 Berlin, Germany

Kronberger Str. 10, 14193 Berlin

+49 30 20 84 97 98

info@building-engineering.de

TIAN Office Singapore

🇸🇬 Singapore

1 Pickering Street, #08-01, Great Eastern Centre, Singapore 048659

+65 984 39 160

info@building-engineering.sg