# ANSYS MESHING – Bias Factor

With this tool you can customize and refine your mesh knowing the length of the first element.

If you input are edge length, number of divisions and length of first element you can use this Excel file: Bias Factor Custom

The equations for calculating the length of the first element of the mesh using Bias Factor are:

## Part 2

For calculating the second length you must multiply the growth rate and the first length, for the third length you must multiply the second length and the growth rate again and so on.

1. This is a nice work, its good if you provide ANSYS WORKBENCH structural analysis .

• Hi my friend;
Thanks, well, soon tutorials about Ansys Mechanical.
Regards

2. Keep up the great work guyz.

• Thanks friend. Regards

3. Hi friend, Thanks for your input, well the file “Bias Factor Custom” are right, Growth rate must be greater than 1 (general ruler), this file was made for a subscriber considering this general ruler. Regards

4. Can you tell me where in the ANSYS helpbook you found the equation for the length of the first element, I would like to reference it for a paper.

• Hi friend, I think that is not referenced in ANSYS HELP, I found the equation testing several options.
Regards

5. ___123___ANSYS MESHING – Bias Factor – CFD.NINJA___123___

6. Hi friend, I think that is not referenced in ANSYS HELP, I found the equation testing several options using Excel.
Regards

7. Thank you for this convenient file CFDNINJA 🙂

My dimensions are in microns, therefore when I try to see the height of the first element it is always 0.00 because of excel significant figures limit that you have put. Can you please send me an updated version without more significant figures? I expect my first element height to be in the range of 0.5-1 microns. Thanks once again

• Hi friend;
Can you send me your data? I can try
The other side, on the website you can change the last excel file, it can calculate microns.
Regards

8. For some reason, I cannot recreate the length of first element from bias factor custom sheet onto bias factor sheet. I’m looking the bias factor for a first element length of 7.0225e-6, 445 divisions, and a 0.01m length.

bias factor custom –> bf = 25.3978
bias factor –> length of first element = 2.9743e-6

9. how can i meshing a circular 3d tube with bias factor?

10. Hi,

Could you explain how you find the right value for r in Excel? And which algorithm in Excel are you using to solve the equation?

Thanks,
Erwin