# Lift and drag force calculation

**URL:** https://discourse.paraview.org/t/lift-and-drag-force-calculation/6425
**Category:** ParaView Support
**Tags:** vtk
**Created:** [February 9, 2021, 10:41am UTC](https://discourse.paraview.org/t/lift-and-drag-force-calculation/6425 "2021-02-09T10:41:34Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![yashika\_dhote](https://discourse.paraview.org/user_avatar/discourse.paraview.org/yashika_dhote/32/4753_2.png) [@yashika\_dhote](https://discourse.paraview.org/u/yashika_dhote)
#### Post date: [February 9, 2021, 10:41am UTC](https://discourse.paraview.org/t/lift-and-drag-force-calculation/6425/1 "2021-02-09T10:41:34Z")

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Dear Paraview users,

I am trying to calculate lift and drag forces on a microfluidic 2D droplet traveling in oil channel. I followed an online tutorial “[https://www.youtube.com/watch?v=J944HOj\_4b0&feature=emb\_logo](https://www.youtube.com/watch?v=J944HOj_4b0&feature=emb_logo)”. It didn’t work for me. I didn’t get any force value in X and Y direction. In Z direction I do got some values whose trend was similar to pressure field. And I don’t think forces should look line this on droplet. I am attaching screenshot of what I did in paraview. I am also attaching one vtu file, it has velocity and pressure field. Can someone help me with how to calculate these forces?

Thank you.  
Yashika

 ![forces](https://discourse.paraview.org/uploads/default/original/2X/d/d783c91aea7b35dc6fdfb8b192a0c78c1cf86395.png)  
[bessel-300.vtu](https://discourse.paraview.org/uploads/short-url/vmIO3aBooVen9FCywaXT8T9gok8.vtu) (2.9 MB)