fluid statics
Aerostatics: When the fluid is a gas. In fluid statics, there is no relative motion between adjacent fluid. layers, and thus there are no shear (tangential) stresses in the fluid. trying to deform it. The only stress we deal with in fluid statics is the normal stress, which. is the pressure, and the variation of pressure is due only to the. weight of the fluid. The topic of fluid statics has significance only in gravity fields. The design of many engineering systems such as water dams and.