2D Modelling

Two Dimensional modelling Software

If you have corners, interfaces (such as jambs, cills or heads), or require a Psi – value, then 2D modelling is required. A Psi – value is the additional heat loss that is created due to the interface of elements such as those mentioned above. This is a more complex calculation and requires the use of more advanced software.
We use by Physibel which also allows for the  calculation of condensation Risk Analysis. For more even more complex / accurate assessment we use that gives finer resolution to two dimensional simulation of heat and water vapour transport. Finally, where we need to predict where the moisture may move to over time we use the detailed results we can get from .

We use these to hold industry standards from:

Key considerations in 2D Modelling:

2D thermal modelling involves creating a numerical representation of the heat distribution within a structure in two spatial dimensions. This type of modelling is crucial for understanding and optimising the thermal performance of buildings, helping designers and engineers assess factors such as energy efficiency, comfort, and potential areas of heat loss or gain. Here’s an overview of these aspects:

  1. Geometry Representation:
    • Floor Plans:
      • The building layout, including walls, windows, doors, and other structural elements, is represented on a two-dimensional plane. This typically involves using a floor plan to define the layout of rooms and the building envelope.
    • Zoning:
      • The building is divided into thermal zones, where each zone represents a distinct area with similar thermal characteristics. This zoning helps in capturing variations in occupancy, usage, and thermal properties.
  2. Material Properties:
    • Thermal Conductivity:
      • Materials within the building, such as walls, floors, and ceilings, are assigned thermal conductivity values. These values determine how easily heat is conducted through each material.
    • Specific Heat:
      • The specific heat capacity of materials is considered to account for their ability to store and release heat. This property is crucial for understanding the thermal inertia of the building elements.
  3. Boundary Conditions:
    • External Conditions:
      • External factors like outdoor temperature, solar radiation, and wind speed are taken into account. These conditions influence the thermal behaviour of the building envelope.
    • Internal Loads:
      • Internal heat sources, such as occupants, lighting, and electronic equipment, contribute to the overall heat balance. These loads are often modelled based on occupancy schedules and equipment usage.
  4. Simulation Techniques:
    • Finite Element Method (FEM):
      • FEM is commonly used for 2D thermal modelling. It discretises the building geometry into finite elements, allowing for the simulation of heat transfer and temperature distribution throughout the structure.
    • Computational Fluid Dynamics (CFD):
      • In cases where air movement is a significant factor (e.g., ventilation systems), CFD may be integrated into the thermal model to simulate fluid flow and heat transfer.
  5. Analysis and Visualisation:
    • Temperature Profiles:
      • The model generates temperature profiles across different locations and elements within the building, helping identify areas with potential thermal issues.
    • Heat Flux Analysis:
      • Heat flux maps highlight areas of heat gain or loss, aiding in the identification of insulation needs and thermal weak points.
    • Visualisation Tools:
      • Our results are visualised through colour-coded ‘maps’ & contour plots to facilitate understanding and interpretation.

Our 2D thermal modelling helps designers optimise their building plans for energy efficiency, occupant comfort, and sustainable practices by identifying and addressing thermal challenges during the early stages of the design process.

What to Discover more?

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