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.0.074Given friction drag, F, C, PAV², C.-=for R <2 x 10¹,Re%2C₂= =0.01Re-2for Re> 2 × 10¹Pmode= 1000 kg/m³, Pr= 1020 kg/m³,prototypeV, 1.125 x 10 m²/sec, v= 1.11 x 10 m²/sec.m

Answered: ted surface area of 2000 m² with a spee…

ted surface area of 2000 m² with a spee In the laboratory at a velocity correspo on the model is 50 N. Determine the fo resistance drag of the model.

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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British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with. 

Question

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.
0.074
Given friction drag, F, C, PAV², C.-
=
for R <2 x 10¹,
Re%2
C₂= =
0.01
Re-2
for Re> 2 × 10¹
Pmode
= 1000 kg/m³, Pr
= 1020 kg/m³,
prototype
V, 1.125 x 10 m²/sec, v
= 1.11 x 10 m²/sec.
m

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