Part II continues the systematic presentation of mechanics and thermophysics of various multiphase media, including bubble liquids, gas and vapor flows of mixtures of insoluble liquids in porous bodies. The experimental methods and their results, mathematical formulations of problems and methods of their solution are described . The theory of sound, shock and kinematic waves, the theory of oscillatory movements in two-phase media, hydraulics and heat exchange of gas-liquid flows, the theory of heat exchange crises, critical outflows, the theory of filtration of multiphase fluid. For students and postgraduates of universities, as well as researchers working in the field of energy, space and nuclear engineering, chemical technology, explosives in the oil and gas industry .