Project 1 - Simulating a BTMS
Aim
The aim of this project is to simulate the flow inside a Battery Thermal Management System
Objectives
The main objectives are as follows
• Excel Calculator for Volumetric heat generation source
- Run the case for different mesh sizes-12.8.6 and 4 mm.
- Effect of element length on accuracy of results.
Setup
1. Solver-Density solver
2. Solver state - Steady state
3. turbulence Model - K-Epsilon Model
4. Inlet Velocity = 4m/s
5. Volumetric Heat source = 30000 W/m^3
6. Outlet Pressure = 0 Pascals
This is the excel sheet for energy density calculation
Battery Thermal Management System
For the simulation of BTMS we need to follow the following steps :
- geometry
- mesh
- solution
- setup
- results
BTMS simulation for mesh size = 12mm
GEOMETRY
MESH
RESIDUAL PLOT
VOLUME AVERAGE TEMPERATURE PLOT
TEMPERATURE CONTOUR OF CELLS
VELOCITY CONTOUR PLOT
VELOCITY VOLUME RENDER
BTMS simulation for mesh size = 8mm
GEOMETRY
MESH
RESIDUAL PLOT
VOLUME AVERAGE TEMPERATURE PLOT
TEMPERATURE CONTOUR OF CELLS
VELOCITY CONTOUR PLOT
VELOCITY VOLUME RENDER
BTMS simulation for mesh size = 6mm
GEOMETRY
MESH
RESIDUAL PLOT
VOLUME AVERAGE TEMPERATURE PLOT
TEMPERATURE CONTOUR OF CELLS
VELOCITY CONTOUR PLOT
VELOCITY VOLUME RENDER
BTMS simulation for mesh size = 4mm
GEOMETRY
MESH
RESIDUAL PLOT
VOLUME AVERAGE TEMPERATURE PLOT
TEMPERATURE CONTOUR OF CELLS
VELOCITY CONTOUR PLOT
VELOCITY VOLUME RENDER
SIMULATION ACCURACY
As we compare all the 4 cases of the residual plot, and the various contour plots, we can observe that if we refine the mesh to fine level we see an increase in the accuracy of the results. But after a certain mesh size the accuracy almost remains constant
CONCLUSION
1. The flow over a BTMS is performed
2. The heat generation source term was derived based on battery specifications
3. The mesh size was varied and we see that there is a slight improvements in the results and plots.