# Chapter_2 - Fluid C haracte ristics and Be havior By: Marm...

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Fluid Characteristics and Behavior By: Marmy Roshaidah Binti Mohd Salleh

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Objectives Student should be able to: i. Define and determine the fluid  properties such as: - Weight - Mass - Density - Specific gravity - Specific weight - Specific volume - Absolute viscosity - Kinematic viscosity
Objectives i. Understand the liquid behavior: - surface tension - capillary effect

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General Behavior Weight Weight of a quantity of fluid is  W = mg   Where: m   = mass (kg) g     = standard earth gravity  = 9.81 m /s 2  or 32.174 ft/s 2 Unit in kg m / s 2  or Newton (N)
General Behavior Mass (m) Defined as the amount of matter in an  object.  Unit : kg

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General Behavior Density ( ρ ) The quantity of matter contained in a unit  volume of the substance.  Unit: kg /m 3 - Density of liquid is nearly constant - Density of water = 998 kg / m 3 v m volume mass = =
General Behavior - Density is highly variable in gases and is a  function of the gas composition, its  temperature and its pressure. Where: P = pressure T = temperature R = gas constant RT P = ρ

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General Behavior Specific Gravity (SG) Ratio of a fluid density to a standard  reference fluid, water (for liquid) and air  (for gases). Unit : None 3 / 1000 m kg SG liquid water liquid liquid ρ = = 3 / 205 . 1 m kg SG gas air gas gas = =
General Behavior Example: What is the specific gravity of mercury if  ρ   HG  = 13 580 kg / m ?

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Example: What is the specific gravity of mercury if  ρ   HG  = 13 580 kg / m ? Ans : 13.6
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## This note was uploaded on 05/08/2011 for the course ACCOUNTING 121210 taught by Professor Sdasdas during the Spring '10 term at Albany College of Pharmacy and Health Sciences.

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Chapter_2 - Fluid C haracte ristics and Be havior By: Marm...

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