Mathematical modeling of gasdynamic flows, accompanying Bora winds

Processes of Bora winds emergence in a bay of Novorossiysk are investigated. The mathematical model based on the Euler's two-dimensional gasdynamic equations with gravitation is offered. The movement of the air front through a coastal ridge with the subsequent emergence of turbulent flow over a sea surface is simulated. Influence of parameters of the influent stream and gravitation is studied. It is shown that the connected to catastrophic consequences in a coastal strip conditions leading to gale-force winds over the sea surface are defined by Calvin–Helmholtz's instability in a shear flow.