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link:-www.viscosity.com My ebook:- https://imojo.in/unitech108

FLUID MECHANIC viscosity   unit-2 My ebook:- https://imojo.in/unitech108 NUMERICAL PROBLEM WITH SOLUTIONS Q.if the dynamic viscosity of the liquid is 0.08 poise and specific gravity of the liquid 2.9 then determine the viscosity in stoke. ANS=0.027 stoke Q.viscosity of fluid with specific gravity 1.3 , measure- 0.0034( N-S/m2 ).Its kinematics viscosity in (m2/s) ANS=2.6×10-6 (m2/s) Q. IF the shear stress acted upon the particular layer 0.2542  N/m2 , then determine the dynamic viscosity in poise and kinematics viscosity in stoke when the specific gravity of the liquid 0.88,velocity gradient along the flow 0.2 sec^-1   ANS= dynamic viscosity=1.226  N-S/m2    kinematics viscosity=13.93 stokeNEXT  Q. A plate having area 1.6×106mm2 and the velocity of upper plate is 2 m/s relative to another stationary same plate and the gap between plate are filled by dynamic viscosity of the oil 3 pois...

                Fluid property                     Viscosity   viscosity is the property which resist the flow of fluid layer motion Inverse of the viscosity property is known as the fluidity due to temperature increase liquid viscosity decrease and due to temperature increase gas viscosity increase in the case of liquid viscosity property is mainly depend upon cohesion but, in the case of gas viscosity property is mainly depend upon collision between molecules/momentum transfer resistance of flow relative property is known as the viscosity Newton's law of viscosity according to Newton's law of viscosity shear stress on a particular layer is directly proportional to the shear stress rate /rate of angular deformation validity of Newton's law of viscosity is only laminear flow condition and by experimental data rate of shear strain is almost equal to the vel...

Fluid property * Bulk modulus and compressibility My book:- https://imojo.in/unitech108 √compressibility coefficient is define  as the reciprocal of bulk modulus compressibility coefficient=1/k  √bulk modulus in fluid system is define as the k=dp/-(volumetric strain) volumetric strain = dv/v √ unit of bulk modulus similar as  pressure √sign of volumetric strain  ◆compress= -ve ◆expand= +ve ◆no change volume= 0 Q[IES 2006]. If the pressure applied on         the cylindrical vessel 0.8 MN/m3  due to this pressure volumetric strain develop 6% reducing in nature then determine the bulk modulus of the liquid. ANS=Bulk modulus(K)=1.33×107                                                      N/m3   ●1atm=101325N/m3   ●1bar=105  N/m3   Q.If the bul...

                  Fluid property *Specific weight/unit weight/weighty density(¥) Video vist-in you tube √unit weight is define as the           weight  by  volume.              unit weight(¥)=W/V √unit system    S.I unit=N/m3    C.G.S unit=dyne/cm3    (1N=105 dyne) √ relation between density and         unit weight             ¥=W/V=mg/v=¶g    ¥=¶g( density× gravity) Q. unit weight of water      a)9.81 KN/m3      b)981 KN/m3      c)1000 KN/m3      d)100 KN/m3  ANS=(a) 9.81 KN/m3   Solution,             ¥=¶g( density× gravity)               =1000×9.81=9810 N/m3           ...

                    Fluid property 1. Density/ mass density(¶)     √density=mass/volume     √density property represent                    denseness of the system     √unit- S.I- kg/m3                C.G.S- gm/cm3 NOTE:-     √density of water=1000 kg/m3(S.I)       (1000×1000)/106gm/cm3(.C.G.S)       1m=100cm     √density of Hg(mercury)=13600                                                    kg/m3(S.I)      density of                                     Hg(mercury)=13.6gm/cm3(.C.G.S) √density of sea water=(1020 to...

 Classification of non Newtonian fluid Based on (B- value) * For B=0,(time independent fluid)     a) funda mental equation     b) apprant viscosity     c) graphical nature       Pseudo plastic - ex- blood , milk,                                                syrup.       Dilatent- honey, suger solution,                            rice starch solution etc Q.if the shear stress education is             given .     ANS=Pseudo plastic(n<1)

Fluid mechanics (C) based on newton's law of viscosity     1. Newtonian fluid- Those fluid in            which Newton's law of viscosity            valid         Ex-water,air,mercury,disel and                  petrol,kerosine oil etc *According to newton NOTE √ in Newtonian fluid graphical nature is linear √  in Newtonian fluid slope b/w shear stress and du/dy graph provide the value dynamic viscosity √in Newtonian fluid viscosity of the fluid is constant