Mod-01 Lec-14 Fluid Kinematics (Contd.)

[@Amankumar-lq6no]

Sir a little confusion in shear strain rate as u find the final result is (dv/dx + du/dy) in xy plane. But in R. K Bansal & also in Cengel book of Fluid mechanics the Shear strain rate is 1/2(dv/dx +du/dy).. Sir i have confused.. What is the true result..prof. S. K som also find the similar resut which u find.. Plz help i am waiting for your response..

[@viveks7734]

One is tensorial strain rate (in which there is 1/2), and the other one is termed as engineering shear strain rate ...they both convey the same thing..Similar concepts are in solid mechanics as well...

[@jshkumar2]

follow no one you derive it ...automatically dv/dx +du/dy comes so it is the shear strain rate/ rate of deformation

[@sampathkodi6052]

Since it is not solid mechanics, even for rotation, as the angles rotated by the fluid element along x and y axes are not the same so 90 degrees, is not guaranteed, to be included in deformation?

[@shreyanghosh6724]

sir you are awesome

[@kalaidoscopez5388]

47:18 😂 that symbol

[@sahilrajeshgajbhiye4968]

ty very much sir

[@Freethinker-oj1or]

I think professor sk som is better from conceptual point of view.