Classification of fluid mechanics>episode=2>

Fluid mechanics

 Classification of fluid mechanics

              Classification of fluid
(A)Based of compress nature of fluid
     1)Compressible fluid-In this type of          fluid density are change
        Ex- air,gases, lPG
     2)Incompressible fluid- in this type          of fluid density are contact
        Ex- water, mercury, oil, glycerin
Q. What is the appropriate condition for in compressible fluid and compressible fluid respectively.
where,d¶-density, #-is not equal
(a)d¶=0, d¶#0
(b)d¶=0, d¶=0
(c)d¶#0, d¶#0
(d)d¶#0, d¶=0
ANS=(a)

(B)Based on theoretical approach
     1. Ideal fluid/perfect fluid/inviscid
         >For ideal fluid following                           property asumed
         √cohesion=0
        √adhesion=0
        √viscosity=0
        √surface tension=0
        √nature= pure in compressible
        √heat loss=0
    (2) Real fluid/viscid fluid
        √cohesion#0
       √adhesion#0
       √viscosity#0
       √surface tension#0
       √nature= compressible
       √heat loss#0
Q. What is the value of bulk modulus for ideal fluid.
(a)K=0
(b)K is not equal 0
(c)K is infinity
(d)not
ANS=(C)
Note- For ideal fluid bulk modulus tends to infinity and compressibility is zero
           For real fluid bulk modulus is not equal to zero and compressibility is not equal to zero