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زياد بن عبدالرحمن السحيباني Zeyad A. Alsuhaibani

Associate Professor

عضو هيئة تدريس

كلية الهندسة
كلية الهندسة، الدور 2، قسم الهندسة الميكانيكية، مكتب رقم 2C84
course

ME 485 Fluid-machinery

King Saud University
College of Engineering
Mechanical Engineering Department
 
ME-485 Fluid-machinery
Detailed Course Syllabus
 
Introduction

  • Definition and classification of turbo-machinery (and fluid-machinery) according to various criteria.
  • Major types of turbomachinery.
  • Similarity relations

Review of relevant background

  • Basic assumptions.
  • Continuity equation, linear and angular momentum theorems.
  • First and Second Laws of Thermodynamics.
  • Bernoulli equation for incompressible flow.
  • The stagnation state for incompressible and compressible flows.
  • Ideal gas relations

Dimensional analysis for a pump

  • Flow coefficient, head coefficient, power coefficient, efficiency, similar points, specific speed and specific diameter, Cordier curve.
  • Characteristic curves for pumps, System or load (pipeline) curve, operating point.
  • Operation at different speeds.
  • Operation of more than one pump in parallel and series.

Isentropic efficiency definitions

  • For nozzles and diffusers (stators).
  • For hydraulic turbines and pumps.
  • For thermal turbines and compressors.

- Total/total versus total/static efficiency of a thermal turbine.
- Polytropic efficiency of thermal turbines and compressors.
Work transfer in a turbomachine: Euler equation of turbomachinery

  • Derivation of Euler equation and an alternative form.
  • Merging with the First Law of Thermodynamics: The Rothalpy equation and the Bernoulli equation.

Detailed study of specific turbomachines types
The Pelton wheel

  • Description
  • Detailed performance analysis.

Centrifugal pumps and fans

  • Components
  • Velocity triangles, slip factor
  • Theoretical head, actual head and hydraulic efficiency.
  • Various losses, overall efficiency.

Centrifugal compressors

  • Inlet and outlet velocity triangles.
  • The h-s diagram of the compression process.
  • Total/total pressure ratio.
  • Maximum Mach numbers in the rotor and stator (diffuser).

Axial-flow gas turbines

  • Description and definition of a stage.
  • Definition of performance parameters: Flow coefficient f, stage loading coefficient ψ, stage reaction °R, enthalpy loss factors λS and λR, total/total and total/static stage efficiencies ηtt and ηts.
  • Performance analysis (direct problem): Derivation of relationships for ψ, °R, ηtt and ηts.
  • Indirect (or design) problem: Derivation of relationships for flow angles for specified f, ψ and °R and sketching the stator and rotor blade rows.
  • Stage pressure ratio and maximum absolute and relative Mach numbers.
course attachements