气体动力学第一讲概述.pptVIP

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气体动力学第一讲概述.ppt

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气体动力学第一讲概述.ppt

Lecture 1: An Introduction Group Exercises 1 Given that standard atmospheric conditions for air at 150C are a pressure of 1.013 bar and a density of 1.225kg, calculate the gas constant for air. Ans: R=287.13J/kgK The value of Cv for air is 717J/kgK. The value of R=287 J/kgK. Calculate the specific enthalpy of air at 200C. Derive a relation connecting Cp, Cv, R. Use this relation to calculate Cp for air using the information above. Ans: h=294.2kJ/kgK,Cp=1.004kJ/kgK Air is stored in a cylinder at a pressure of 10 bar, and at a room temperature of 250C. How much volume will 1kg of air occupy inside the cylinder? The cylinder is rated for a maximum pressure of 15 bar. At what temperature would this pressure be reached? Ans: V=0.086m2, T=1740C. Lecture 1: An Introduction Group Exercises 2 Derive the following formulations from basic thermodynamics equations learned in this lecture, Problems 2.4 and 2.6 on page 47 Q A! Lecture 1: An Introduction * Prof. Yancheng You(尤延铖) yancheng.you@ Lecture 1: An Introduction Overview Course syllabus Questions to be answered Review of elementary principles Lecture 1: An Introduction Course syllabus Textbook: Zucker, Robert D. Fundamentals of Gas Dynamics. 2nd ed. Hoboken, N. J: J. Wiley, 2002. /s/jik368j3u7wxje9emsgo Reference: F. M. White, Fluid Mechanics( with Student DVD). McGraw Hill, ISBN: 9780077422417, 2010. J. Anderson, Fundamentals of Aerodynamics. ISBN: 9780073398105, McGraw-Hill, 2010. M. J. Zucrow, and J. D. Hoffman. Gas Dynamics, Vol. 2: Multidimensional Flow. Wiley, ISBN: 9780471018063, 1977. Liepmann, H. W., and A. Roshko. Elements of Gasdynamics. Dover Publications, ISBN: 0486419630, 2002. F. M. White, Viscous Fluid Flow. McGraw-Hill, ISBN: 9780071244930, 2006. Lecture 1: An Introduction Course syllabus Course Objectives: This course deals with compressible flow that is encountered in many aerospace and mechanical engineering practices and provides deeper knowledge on the effect of compressibility on a