FLUID MECHANICS.docx

**FLUID MECHANICS** **Fluid Mechanics** -- is the science that deals with of fluid at rest (fluid statics) or in motion (fluid dynamics). Others.... **APPLICATION OF FLUID MECHANICS**   ...

**FLUID MECHANICS** **Fluid Mechanics** -- is the science that deals with of fluid at rest (fluid statics) or in motion (fluid dynamics). Others.... **APPLICATION OF FLUID MECHANICS**      **And many more.....** **CHARACTERISTICS OF FLUID VS. SOLIDS** **CHARACTERISTICS OF FLUID VS. SOLIDS** **NO - SLIP CONDITION**  **CLASSIFICATION OF FLUID FLOWS** **Viscous Vs. Inviscid Flow**  **Internal Vs. External Flow** Flow of fluids is classified as external or internal flow fluid flows in confined space or over the surface.  **Compressible Vs. Incompressible Flow** Flow is classified as compressible or incompressible variation of density during flow. **Fluid is incompressible when:** the density remains nearly constant throughout. Volume of every portion of fluid remains unchanged over the course of its motion. **Gases are highly compressible.** **Laminar Vs. Turbulent Flow** Flow is classified as Laminar, transitional, or Turbulent flow depending on their Reynolds number (Re). ---------------------------------------- **Is it a Laminar or Turbulent flow?** ---------------------------------------- **Natural Vs. Forced Flow** **Forced Flow** -- when a fluid forced to flow over a surface of pipe by means of external flow such as pump or fan. **Natural Flow** -- due to natural means such as buoyancy effect which manifests itself as the rise of warmer (lighter fluid) and fall of cooler (denser).- Example: Mantle's convection current, hot air balloon, etc. **Steady Vs. Unsteady Flow** **Uniform Vs. Non-Uniform Flow** **Uniform Flow Non-uniform Flow** **Dimensions** -The quantitative description requires both a number and a standard by which various quantities can be compared.  **DIMENSIONALLY HOMOGENEOUS** **SYSTEMS OF UNITS** **1. International System**  **2. English Engineering System (EE System)**