The velocity profile is commonly approximated by a third-order (or cubic) polynomial as:3*-10-10²Uxand is depicted in Figure 4.3.=y/8y/8=1y/8=0Vooux/VooFlatSurfaceux/Vα = 0ux/ V∞ = 1Figure 4.3: Dimensionless velocity profile in a laminar BL over a flat surface.52 Page(4.2) 2. A Newtonian fluid flows over a flat plate. The dimensionless velocity distribution as afunction of dimensionless vertical distance in the boundary layer can be expressed bya third-order polynomial (Eq. 4.2). Derive an expression for the shear stress acting onthe plate in terms of u, V and 8.[Ans. Tw= 1.5μ Vold

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Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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Transcribed Image Text:The velocity profile is commonly approximated by a third-order (or cubic) polynomial as: 3 *-10-10² Ux and is depicted in Figure 4.3. = y/8 y/8=1 y/8=0 Voo ux/Voo Flat Surface ux/Vα = 0 ux/ V∞ = 1 Figure 4.3: Dimensionless velocity profile in a laminar BL over a flat surface. 52 Page (4.2)