Serial UDF on Windows OS

UDF has to be compiled, can’t be interpolated

For ansys 16.x, launch Fluent from the Command Line using the VS2015 x86 x64 Cross Tools Command Prompt (not x64 x86 cross tools)

1) Open the Start screen (press Windows button on your keyboard, Type 'VS2013 x86 x64 Cross Tools Command Prompt'

2) Navigate to your working folder, i.e. the folder where your case and data files are (.cas & .dat).

3) Type “fluent” in the command window to launch Fluent or “C:\Program Files\ANSYS Inc\v161\fluent\ntbin\win64\fluent.exe” (quotation signs included, in case of standard installation; fluent version: 16.1).

4) Make sure that on the Environment tab 'Setup Compilation Environment for UDF' is ticked. The default address is fine.

1. Read mesh/cas file

2. Setup turbulence model/boundary conditions, etc.

3. Compilation

a. Define/user-defined/functions/compiled, load

4. Hook UDF file to velocity component at inlet

a. Boundary condition/inlet/x or y component velocity/udf

5. Setup point monitors at inlet

Create a point at inlet and monitor the velocity at the defined point

a) Define a point at inlet:

Create a point at inlet BC

Surface/point

b) Solution--monitors--surface--fill your information to dialog table

Report type: vertex average

Field variable: velocity, velocity magnitude/component;

Surface: a point at inlet BC

6. Setup time step size, 0.002s, save cas file

a. Time step, 1/100 period of wave

b. 1 degree per time step, 0.001s, 360 time step per circle of turbine rotation

If ω=14.34, TSR=5.5, T=0.44,

U(m/s)	TSR	r(m)	Angular velocity	T(s)	time step size
0.6	5.5	0.23	14.34782609	0.437919	0.001216

7. Initialisation, compute from inlet

Calculation, 200 time steps

ANSYS