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(b) I wo fluid streams with velocities u₁ and u₂ flow between parallel plates separated by a distance 2h as shown. The streams enter a mixing zone and emerge with uniform velocity U. The flow is incompressible, the pressure at each cross-section is uniform and viscous forces around the control volume are negligible. h u₁ • Find the pressure change across the mixing zone, expressed as a function of u1, U2, and corresponding mass flow rate m, m, and U. Find the lost work. When u₁ = 15 m/s, u₂ = 40 m/s, h = 25m, width = 3m, U = 25 m/s, calculate pressure change. (Hint: you cannot assume the widths of the two flow streams are h each. You will need to calculate each width)

(b) I wo fluid streams with velocities u₁ and u₂ flow between parallel plates separated by a distance 2h as shown. The streams enter a mixing zone and emerge with uniform velocity U. The flow is incompressible, the pressure at each cross-section is uniform and viscous forces around the control volume are negligible. h u₁ • Find the pressure change across the mixing zone, expressed as a function of u1, U2, and corresponding mass flow rate m, m, and U. Find the lost work. When u₁ = 15 m/s, u₂ = 40 m/s, h = 25m, width = 3m, U = 25 m/s, calculate pressure change. (Hint: you cannot assume the widths of the two flow streams are h each. You will need to calculate each width)

Introduction to Chemical Engineering Thermodynamics
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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how to find the lost work? which eqn should I use? Pls help me. Thank u,

(b) Two fluid streams with velocities u₁ and u2 flow between parallel plates separated by a distance 2h as shown. The streams enter a mixing zone and emerge with uniform velocity U. The flow is incompressible, the pressure at each cross-section is uniform and viscous forces around the control volume are negligible. • Find the pressure change across the mixing zone, expressed as a function of u₁, u2, and corresponding mass flow rate m, m₂, and U. Find the lost work. h u₁ 4₂ d When u₁ = 15 m/s, u₂ = 40 m/s, h = 25m, width = 3m, U = 25 m/s, calculate pressure change. (Hint: you cannot assume the widths of the two flow streams are h each. You will need to calculate each width)
Transcribed Image Text:(b) Two fluid streams with velocities u₁ and u2 flow between parallel plates separated by a distance 2h as shown. The streams enter a mixing zone and emerge with uniform velocity U. The flow is incompressible, the pressure at each cross-section is uniform and viscous forces around the control volume are negligible. • Find the pressure change across the mixing zone, expressed as a function of u₁, u2, and corresponding mass flow rate m, m₂, and U. Find the lost work. h u₁ 4₂ d When u₁ = 15 m/s, u₂ = 40 m/s, h = 25m, width = 3m, U = 25 m/s, calculate pressure change. (Hint: you cannot assume the widths of the two flow streams are h each. You will need to calculate each width)
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Step 1: Given

Given :

Chemical Engineering homework question answer, step 1, image 1

  • u1 =15m/s   
  • u2 = 40 m/s
  • h = 25 m/s
  • w= 3 m
  • U=25 m/s
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