Characteristics of Pelton Wheel (Impulse Turbine) Purpose: To investigate typical performance characteristics of an impulse turbine. Apparatus: Armfield Pelton Turbine‚ Armfield Hydraulics Bench and digital tachometer. Sketch a labeled schmematic diagram of the apparatus. Theory and Definitions: (Ref. Munson/Young/Okiishi A Brief Introduction to Fluid Mechanics‚ 3/e‚ p. 479) 1. Ideal Power and efficiency From 1-D energy equation‚ derive the ideal (inviscid flow) power output of an impulse
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Dimensional Analysis 2.1 Writing physical relations in dimensionless form . . . . 2.1.1 Characteristic scales and dimensionless variables 2.1.2 The mixing tank DE . . . . . . . . . . . . . . . 2.1.3 The sky-diver DE . . . . . . . . . . . . . . . . . 2.2 Deducing physical relations using dimensional analysis . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2.1 A motivating example . . . . . . . . . . . . . . 2.2.2 Complete sets of dimensionless variables . . . . 2.2.3 The Buckingham Pi Theorem
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to a standard curve. To know about refractive index measurement first of all we know something about refractive index. What is refractive index? In optics the refractive index or index of refraction n of a substance (optical medium) is a dimensionless number that describes how light‚ or any other radiation‚ propagates through that medium. It is defined as ‚ Where‚ where c is the speed of light in vacuum v is the speed of light in the substance example‚ the refractive index of water is
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4.4 MarkingScheme For 1mark multiple-choice questions‚ 1/3 mark will be deducted for a wrong answer. Likewise‚for 2 marks multiple-choice questions‚ 2/3 mark will be deducted for a wrong answer. However‚for the linked answer question pair‚ where each question carries 2 marks‚ 2/3 mark will bededucted for a wrong answer to the first question only. There is no negative marking for wronganswer to the second question of the linked answer question pair. If the first question in thelinked pair is wrongly
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pressure due to friction. As increasing the average of velocity‚ the pressure losses will increase too. For constant conditions limits of flow‚ Osbourne Reynolds showed in 1883 that there are two kinds of flows according to the value of a dimensionless number called the Reynolds number and noted: ReD =ρV Dμ‚ where V is the flow velocity‚ D a characteristic size‚ and v the fluid kinematic viscosity. When the Reynolds number is low‚ the current lines are stationary‚ and the flow is said laminar
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Discussion…………………………………………………………………………………………6 Conclusion………………………………………………………………………………………...7 Reference……………………………………………………………………………………….....7 Appendix…………………………………………………………………………………………..7 ABSTRACT This experiment introduces the use of dimensionless analysis and conventionally analytical method to survey the performance of centrifugal pump. The end of this experiment points out the benefit of using the “new” method to the conventional in most practical problem‚ especially in the survey of
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increased there will be an angle at which the body begins to slide down the plane. This is the angle of repose and the tangent of this angle is the same as the coefficient of friction. [pic] [pic] µ=tan([pic]) Coefficient of friction is a dimensionless scalar value which describes the ratio of the force of friction between two bodies and the force pressing them together. The coefficient of friction depends on the material used. EXPERIMENTAL METHOD Appartus required :- The objects required
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Using System Dynamics in Business Simulation Training Games by Jennifer Ching-Wen Han Submitted to the Department of Electrical Engineering and Computer Science in Partial Fulfillment of the Requirements for the Degree of Masters of Engineering in Electrical Engineering and Computer Science at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY May 9th‚ 1997 © Massachusetts Institute of Technology‚ 1997. All Rights Reserved. Au th or .......................................................................
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4 External Forced Convection 4.1 Introduction to Laminar Boundary Layers 4.1.1 Introduction Chapters 1 through 3 consider conduction heat transfer in a stationary medium. Energy transport within the material of interest occurs entirely by conduction and is governed by Fourier’s law. Convection is considered only as a boundary condition for the relatively simple ordinary or partial differential equations that govern conduction problems. Convection is the transfer of energy in a moving medium
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behavior of the flow of fluid either it is laminar or turbulent by calculating it’s Reynolds number and the characteristic of the flow. Other than that‚ the range for laminar and turbulent flow can be calculated and the theory that Reynolds number is dimensionless can be proven. The pump is opened to let the water flow. The dye injector valve is opened to let the dye flow into the glass tube which act as an indicator to the fluid behavior either it is laminar‚ transition or turbulent. The volume of water
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