Consider a laminar flow at zero over a flat plate . The shear stress at the wall is denoted by $${\tau _w}.$$ The axial positions $${x_1}$$ and $${x_2}$$ on the plate are measured from the leading edge in the direction of flow. If $${x_2} > {x_1},$$ then

$${\tau _w}\left| {_{{x_1}} > {\tau _w}} \right|{}_{{x_2}}$$

$${\tau _w}\left| {_{{x_1}} = {\tau _w}} \right|{}_{{x_2}} = 0$$

$${\tau _w}\left| {_{{x_1}} = {\tau _w}} \right|{}_{{x_2}} \ne 0$$

$${\tau _w}\left| {_{{x_1}} > {\tau _w}} \right|{}_{{x_2}}$$

$${\tau _w}\left| {_{{x_1}} < {\tau _w}} \right|{}_{{x_2}}$$

GATE 2017 Mechanical Engineering PYQ — Fluid Mechanics

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Fluid Mechanics · Boundary Layer

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Recurring concept

Boundary Layer has appeared in GATE Mechanical Engineering 22 times across 15 years (2015, 2016, 2017, 2022, 2023, ...).