Tuesday, January 15, 2008

ME 412: CFDHT Lab


In computational fluid dynamics and heat transfer methodology there are 3 main steps:

  1. Pre-Processing:In this step the problem is formulated. The domain is discretized in to finite number of cells/control volumes. The governing equations and boundary conditions are discretized using appropriate discretization methodology (FVM) to obtain set of Linear Algebraic Equations.
  2. Solution: A solution methodology/Algorithm is used to solve the set of Linear Algebraic Equations obtained in previous step.
  3. Post-Processing: The end result of solution step is converged values of independent variables at all the discrete locations. Analysis of solution is aided by converting numbers into quantitative and qualitative results. Quantitative parameters include 'rate of heat transfer at boundaries' in heat transfer problems, 'coefficient of friction' in fluid flow problem. Qualitative data include contour plots of temperature, pressure and streamlines and velocity vector plot.
In the LAB sessions, you will be performing each of the above mentioned steps for solving and analyzing all problems.
The first step has to be done carefully (preferably in a notebook) for every problem.
In the second step, computer code has to be generated to solve the formulation developed in step 1.
For the third step, the quantitaive parameters have to be calculated using the code itself, while the qualitative results are to be plotted in special plotting software e.g. Tecplot.