What is Viscous Damping?
142208
A viscous damper opposes motion with a force proportional to speed, thus dissipating mechanical energy. This contrasts with a spring, which opposes displacement with a force proportional to deflection and stores the energy required to deflect it, returning the energy to the vibrating system as it returns to the undeflected state. Viscous energy dissipation reduces the amplitude of a vibration.
836799
Viscous humerus, blood, water, nerves, blood vessels, etc.
999288
well, others might have told you it is pressure, and actually even i would have gone for it!\nbut since you have mentioned in particular on a fluid, then this ratio can also be called as Bulk's modulus(though this applies even to solids)\nit can also be the coeff of viscosity taken velocity gradient times\nthere can be various other depictions also
579637
Basically it's a complex mathematical process to process the vibration response data obtained from siesmic excitation of an oil field to characterize the field in terms of parameters understandable to the analyst (e.g., porosity and impedance). See the ref.
208772
When a fluid (liquid or gas) flows over a surface there is some amount of friction between that fluid and the surface. As a result the velocity of the fluid on the surface is zero. As you move away from the surface the velocity increases until it reaches the same velocity as the rest of the fluid flow. This small region where the velocity of the fluid increases from zero up to the velocity of the rest of the flow is called the boundry layer.\n\nIf a fluid is more viscous this boundry layer will be thicker. Lower viscosity means a smaller boundry layer.
874485
Glycerin, motor oil, honey...\n\nOh, and Robert R below is wrong about glass, the claim that glass is a very viscous fluid has been dispelled a few years ago, but the announcment thereof was seemingly not as popular as the original claim -- I was saying that myself until was shown the evidence.  Glass is an amorphous solid, and recent materials created by super-quencing metals or inhibiting crystaline formation have created a whole new class of material called glass-metals with unique properties -- do a search on vitralloy.\nBut ordinary glass will now flow over time.
338219
the resistive force that air will exert upon an object moving through it at a given velocity.\n\nthe equation is Drag= 1/2 cpav2 (squared)\n\nc is a constant.\np is the density of the fluid (air in this case)\na is the cross sectional area of the object\nv is the velocity of the object.
1139330
Hi\nThe most damping rubber material I know is acrylate caoutchouc. It is also temperatur resistant up to 130°C. CR (chlorine butadiene caoutchouc) is also pretty good in damping. An alternative material is PU foam. The right material for you depends on the application.
118247
finite element method\nit is used for systems identification , etc
238117
If by "calculate" you mean process the results of experimental meaurements of speed, force, etc., then you measure the initial total energy (potential, kinetic) of the test object, measure all known energy input that occurs along the path (integral of applied external force times velocity dot product), and subtract from the total of those two the final total energy. The result is the energy lost to dissipative processes like friction and air resistance.\nIf instead you use calculate in the sense of predicting the dissipative losses, you need a model of the object (its drag coefficient and the coefficient of friction). If the path is constant-slope and speed and air density are constant, you can calculate the end state analytically because drag force is constant and so is normal force and thus friction. Otherwise you have nonlinearities which require a time-stepped simulation to solve.
913737
In physics it is acoustics.
661750
google search\n Redwood Viscometer \n \n  No. 1, As per IP specification. Fitted with energy regulator and specification with thermometer (Flow Range 20 sec. To 2000 sec.)
1175019
In general resistance increases.If there is no turbulence then it can be shown that viscous drag on a spherical moving body of radius r and velocity v is \n6*pi*(eta)*r*v\nwhere eta is coefficient of viscosity.\nTherefore air resistance is usually taken as directly proportional to velocity.\nHowever in real life things are not that simple.With turbulence various other forces come in play.Surprisingly it can reduce the air drag too.Though it may cause deviations in path as forces are no longer just opposite to velocity .
419658
Magneto-rheological fluids can change their viscosity in response to an applied magnetic field. Automobile suspension dampers (which are misleadingly called shock absorbers) that use these fluids can provide variable damping to match the characteristics of the road. They are also proposed for use in adaptively damping buildings against seismic vibrations, since they can be controlled to provide optimum damping of the particular frequency content of the disturbance (ref.).
523067
evaporation of water through breathing makes it less viscous, hence sticky.
515562
Friction, Heat generated to name 2 reasons.
581578
Viscosity decreases with increase in temperature.You need to consult charts for that.