4th Edition

ISBN: 2810022150991

Author: CENGEL

Publisher: MCG

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Chapter 7, Problem 114P

Engineers at MIT have developed a mechanical model of a tuna fish to study its locomotion. The “Robotuna’ shown in Fig. P7-114 is 1.0 m long and swims at speeds up to 2.0 ins. Real bluefin tuna can exceed 3.0 in in length and have been clocked at speeds greater than 13 m/s. How fast would the 1.0m Robotuna need to swim in order to match the Reynolds number of a ical tuna that is 2.0 in long and swims at 10 at s?

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Chapter 7, Problem 113P

Chapter 7, Problem 116P

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Required information Water initially at 200 kPa and 300°C is contained in a piston-cylinder device fitted with stops. The water is allowed to cool at constant pressure until it exists as a saturated vapor and the piston rests on the stops. Then the water continues to cool until the pressure is 100 kPa. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Water 200 kPa 300°C On the T-V diagram, sketch, with respect to the saturation lines, the process curves passing through the initial, intermediate, and final states of the water. Label the T, P, and V values for end states on the process curves. Please upload your response/solution by using the controls provided below.

A piston-cylinder device contains 0.87 kg of refrigerant-134a at -10°C. The piston that is free to move has a mass of 12 kg and a diameter of 25 cm. The local atmospheric pressure is 88 kPa. Now, heat is transferred to refrigerant-134a until the temperature is 15°C. Use data from the tables. R-134a -10°C Determine the change in the volume of the cylinder of the refrigerant-134a if the specific volume and enthalpy of R-134a at the initial state of 90.4 kPa and -10°C and at the final state of 90.4 kPa and 15°C are as follows: = 0.2418 m³/kg, h₁ = 247.77 kJ/kg 3 v2 = 0.2670 m³/kg, and h₂ = 268.18 kJ/kg The change in the volume of the cylinder is m

Chapter 7 Solutions

FLUID MECHANICS FUNDAMENTALS+APPS

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Solution Summary: The author compares the Reynolds number of models with that of prototype tuna. The pressure and viscosity will remain same for both prototype and model tune fish.

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