41. The incompressible case is simpler than the compressible one so for didactical purpose it should be presented before. 42. The relation between flow rate and inlet pressure is calculated with Poiseuille's equation for compressible fluids. 43. When the number of discrete symbols in a given stream is reduced, the stream becomes more compressible . 44. I never heard of the use of compressible fluids, but that would probably suffer the same problem. 45. The compressible Navier-Stokes equation describes both the flow field, and the aerodynamically generated acoustic field. 46. As shown in the USGS figure, aquifers are frequently associated with compressible layers of silt or clay. 47. The resulting model came to be known by the name of Mesoscale Compressible Community model ( MC ). 48. Water "'is "'compressible , but only at pressures comparable to 20000 atmospheres. 49. It's used because it is a convenient low cost compressible and expandable working fluid when heated. 50. Yosioka and Kawasima calculated the acoustic radiation force on compressible particles in a plane wave field in 1955.
