Q.56 It is proposed to design a ship. The proposed ship (prototype) is has a length of 150m and wetted surface area of 2000 m² with a speed of 40 km/hr. A model of 1:20 is tobe tested in the laboratory at a velocity corresponding to the wave resistance. Thetotal drag on the model is 50 N. Determine the following(1) Wave resistance drag of the model.(ii) Wave resistance drag of prototype.(iii) Friction drag on prototype.1Given friction drag, F, ==C PAV², CH0.01Rec.2for Re> 2 x 10'0.074RePmode=1000 kg/m³, p.= 1020 kg/m³,prototypev₂ = 1.125 x 10 m/sec, v = 1.11 × 10 m/sec.Pfor R <2 x 10¹,

Answered: d wetted surface area of 2000 sted in…

d wetted surface area of 2000 sted in the laboratory at a ve drag on the model is 50 N. De Wave resistance drag of the m

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Pressurized pipe flow

A 15-kilometer-long pipe with a pipe diameter of one meter transports water at a speed of one meter per second. The pipe has a friction coefficient of 0.005. Calculate the frictional head loss?

Question

Q.56 It is proposed to design a ship. The proposed ship (prototype) is has a length of 150
m and wetted surface area of 2000 m² with a speed of 40 km/hr. A model of 1:20 is to
be tested in the laboratory at a velocity corresponding to the wave resistance. The
total drag on the model is 50 N. Determine the following
(1) Wave resistance drag of the model.
(ii) Wave resistance drag of prototype.
(iii) Friction drag on prototype.
1
Given friction drag, F, ==C PAV², C
H
0.01
Rec.2
for Re> 2 x 10'
0.074
Re
Pmode=1000 kg/m³, p.
= 1020 kg/m³,
prototype
v₂ = 1.125 x 10 m/sec, v = 1.11 × 10 m/sec.
P
for R <2 x 10¹,

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