How to access one of the velocity gradients in KinematicParcel? -- CFD Online Discussion Forums

March 7, 2021, 06:45	How to access one of the velocity gradients in KinematicParcel?	#1
zhangxc0223 New Member Matthew Join Date: Aug 2017 Posts: 28 Rep Power: 8	I have read the thread, which is pretty good for SolidParticle.C. Now I would like to access one of the velocity gradients (let's say the component 0 as a scalar) in KinematicParcel.C, and interpolate the value at particle position. I am not sure how and where to exactly implement the modification, as I always encounter an error like: Code: Foam::KinematicParcel<ParcelType>::trackingData' does not have any field named 'GradUcInterp_' GradUcInterp_ Also, I might pretty new to the library, I am not sure how to modify the constructors in each H file? It would be great if anyone can give me some hints about it.

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