CFD
Flow and heat transfer
Heat exchanger
Velocity vectors side
velocity vectors rear
Meshing
Velocity vectors side
CFD of heat exchanger
Computational Fluid Dynamics simulation, of a heat changer. with constant inflow rate.
The aim of the simulation was to find the temperature field inside the computational domain, while the inlet and outlet temperatures set to be constant values, and unknown heat flux has to be found, such that will yield the desired outflow temperature.
One of the problems the simulation aim to solve, is a very high heat exchange temperature which cause a physical failure due to high temperature.
The analysis is a steady state, with SST - DES turbulence model, boussinesq approximation, and almost 5M elements.
Transient flow - non lethal bullet
Transient velocity vector field
Mesh with closeup
Lift force vs. time
Transient velocity vector field
CFD of non lethal paintball bullet
Three dimension CFD simulation of paintball bullet, being subjected to a constant vector field.
The simulation aims to examine a paintball, non-lethal bullet for the police forces. While The main objective of the study was to find lift and drag force.
The simulation is transient, using k-w SST turbulence model, with the bullet is rotating around it's advancement axis, lift force is calculated and has a frequency of 62.5 Hz, with values of +4.02mN and -4.9mN, meaning that the average lift force is negative, a value needed for the external ballistics calculations.