
Building & Construction Simulation Consultancy
Mansim helps architects, MEP consultants, developers, contractors and building owners understandhow buildings will perform before design decisions reach construction or operation.
We combine CFD, energy and thermal modelling, environmental simulation and design optimisation to assess ventilation, HVAC performance, thermal comfort, overheating, wind microclimate and safety-critical airflow. From individual rooms and building systems to complete developments and urban masterplans, our simulations provide quantitative evidence for better-performing, lower-risk and more resilient buildings.


Mansim Building & Construction Capabilities
From Urban Context to Occupied Environment
1. Urban Environment
Wind climate · masterplans · neighbouring buildings · public realm

Assess how development massing and surrounding structures alter local wind and environmental conditions.
2. Building Envelope
Façades · openings · glazing · natural ventilation · heat transfer

Understand how external conditions interact with the building fabric and passive ventilation strategy.
3. Ventilation & HVAC
AHUs · FCUs · diffusers · grilles · supply & extract

Model how conditioned and fresh air is distributed through the building.
4. Occupied Spaces
Temperature · airflow · comfort · IAQ · overheating

Assess the conditions experienced by occupants across rooms, floors, atria and connected spaces.
5. Safety & Specialist Environments
Smoke ventilation · pressure control · clean environments · exhaust

Investigate safety-critical airflow and specialist ventilation requirements.
6. Energy & Optimisation
Energy demand · retrofit · passive design · performance optimisation

Compare design and operating strategies to reduce energy demand while maintaining environmental performance.

Building & Construction Engineering Challenges
Delivering Comfort Without Oversizing Building Services
Heating, cooling and ventilation must maintain comfort across changing weather and occupancy without unnecessary energy use or oversized equipment.
Reducing Operational Energy Without Compromising Performance
Natural ventilation, heat recovery, efficient HVAC and passive design must work together to reduce energy use while maintaining building performance.
Managing Wind and Environmental Effects Around New Developments
Building form can create uncomfortable wind conditions, recirculation and local high velocities. CFD helps assess these effects and optimise the design.
Demonstrating Performance Before Construction or Retrofit
Simulation allows layouts, ventilation strategies and equipment options to be tested before committing to construction or physical changes.

Standards & Regulatory Context

Building Regulations
Part F: Ventilation

Building Regulations
Part L: Energy and Greenhouse Gas Emissions

Building Regulations
Part O: Overheating

CIBSE TM52 & TM59
Guidance for assessing overheating and thermal comfort in buildings.

BS EN 16798-1
Indoor environmental criteria for thermal comfort, air quality and building energy performance.
Frequently Asked Questions
Building & Construction Projects
Discuss Your Building & Construction Project
Tell us the engineering decision you need to make, the information you already have and the timescale you are working to. Your enquiry will be reviewed by a CFD engineer, who will acknowledge your enquiry within one working day and identify the most proportionate next step.







