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# (a). Give the definitions to the concepts used in thermodynamics and fluid mechanics:  Process  Cycle  Real gas  Perfect gas  1 st law of thermal dynamics  Thermal equilibrium  Viscosity  Inviscid fluid  Control volume  Steady flow

In this paper you are required to define the main terms of the topic Fluid Mechanics and Thermal Dynamics that are process, real gas, laws of thermal dynamics, Thermal equilibrium, control volume, fluids and flows. Additionally, you have to answer the given questions in details regarding the theme with the help of graphs and scales.

Instructions

ASSIGNMENT: Coursework on Fluid Mechanics and Thermal Dynamics

(a). Give the definitions to the concepts used in thermodynamics and fluid mechanics:  Process  Cycle  Real gas  Perfect gas  1 st law of thermal dynamics  Thermal equilibrium  Viscosity  Inviscid fluid  Control volume  Steady flow

(b) Answer all following questions (1). If you put cold water into a blender and mix it rapidly for several minutes, the water will become warm. Where does the additional thermal energy come from? [4 marks] (2) State the conditions that should be met to apply Bernoulli’s equation. [7 marks] (3) State the conditions which must be applied if a thermodynamic operation is to be reversible.

Question 2 (25 marks) (a) For the manometer shown in the figure below, calculate the pressure difference pA-pB. The water density water is taken as 1000 kg/m3 . The specific gravities for mercury and oil are 13.6 and 0.86 respectively.

(b) A bucket is filled from a garden water butt as shown in Fig Q2 (b). The butt is filled with water to a level of hfill = 1.5 m. The water is discharged via a 10 mm round pipe (Dpipe) near the bottom of the tank.

Question 3 (25 marks) A Venture meter shown in Fig. Q3 is essentially a convergent-divergent construction in a pipeline. The change in pressure in the liquid as it passes through the meter can be used to determine the flow rate.

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