Special attention is paid to actual problem for biology and medicine.
The variation of media characteristics in high-power acoustic fields will be studied as well. This Project makes a contribution to the Conversion in Defense Science, because similar problems have been solved in underwater acoustics and design of high-power focusing devices having implications for different defense purposes. Modified nonlinear equations similar to those used in applied acoustics earlier will be derived and solved by asymptotic and numerical methods. For example, nonlinear geometrical acoustics approximation, quasi-optical and paraxial approaches will be used, as well as new numerical algorithms. The knowledge obtained during the Project performance will be important for the development of nonlinear wave physics and nonlinear acoustics.