What question did this study set out to answer?

To analyze the unsteady fluid flow and resultant heat transfer dynamics generated by a rotating disk moving vertically upward or downward.

June 1, 2018Physics of Fluids

Fluid flow and heat transfer over a rotating and vertically moving disk

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Authors

MTMustafa TürkyılmazoğluChina Medical University

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Implication

Theoretical analysis reveals modified boundary layer and thermal dynamics in vertically translating rotating disks, indicating unique effects distinct from traditional wall suction.

Key Points

To analyze the unsteady fluid flow and resultant heat transfer dynamics generated by a rotating disk moving vertically upward or downward.
Formulated similarity equations governing unsteady fluid flow over a rotating disk translating vertically upward or downward.
Reduced governing equations to benchmark against von Kármán's classic viscous pumping model for vertically stationary rotating disks.
Rapid upward disk movement generates a jet-like radial velocity through viscous pumping, functioning analogously to surface injection.
Downward disk motion suppresses the velocity field while expanding boundary layer thickness, diverging from conventional wall suction behavior.
High disk rotation rates overwhelm the vertical motion influence, while the temperature field closely tracks time-varying surface temperature boundary conditions.

Cite This Study

Mustafa Türkyılmazoğlu (2018) studied this question.

synapsesocial.com/papers/6a8fb002078b43ba732bbef3 https://doi.org/10.1063/1.5037460

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Implication

Theoretical analysis reveals modified boundary layer and thermal dynamics in vertically translating rotating disks, indicating unique effects distinct from traditional wall suction.

Fluid flow and heat transfer over a rotating and vertically moving disk

Discussion

Member takes

Implication

Key Points

Cite This Study

Fluid flow and heat transfer over a rotating and vertically moving disk

Discussion

Member takes

Implication

Key Points

Cite This Study

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