Скачать или смотреть Q.27 ⋈ Deriving Viscous Torque on a Rotating Disk: Step-by-Step Explanation

Q 27. A circular disk of radius R is kept at a small height h above a fixed bed by means of a layer of oil of dynamic viscosity µ. If the disk is rotated at an angular velocity ω, obtain an expression for the viscous torque on the disk. Assume linear variation of velocity within the oil film.

In this video, we derive the expression for the viscous torque on a circular disk rotating above a fixed bed. The problem considers the following parameters:

Disk radius: *R *
Height of oil layer: *h *
Dynamic viscosity of oil: µ
Angular velocity of the disk: ω

Assuming a linear velocity variation within the oil film, we use fluid mechanics principles to calculate the viscous torque. This tutorial is ideal for students and professionals in engineering and physics who want to strengthen their understanding of rotational motion and fluid mechanics.

👉 Don't forget to like, share, and subscribe for more educational content on engineering and physics concepts!