4.2.2 Drag and lift Coefficients
The dynamic pressure due to the transien~ winds be~ind the ~irblast shock front exert drag and lift forces on objects that mterfe.re with the air flow '. Drag forces are defined as those forces caused by dynamic pressure that act m the direction of air flow, while lift forces act perpendicular to the direction of flow. Drag and lift forces are a function of several variables, including air ~ow character istics; object shape, size, and surface texture; and location on object ".
The relationships between dynamic pressure and the forces actmg on ~n object are expressed in terms of drag and lift coefficients. The total drag or lift
coefficient of an object is given by