The error committed by imposing the upper rigid boundary is small in connexion with the shorter lee-waves.
For a given mountain range it is extremely difficult to estimate the location and orientation of lee waves.
The internal structure of the bedforms is massive, although openwork clusters of pumice occur at the crest and on the lee-side.
Particular emphasis is given to modelling the airborne disease spread and exploring the lee-wave hypothesis.
It is assumed that a system of lee waves is formed and consequently the body suffers drag.
The exact equation governing steady two-dimensional non-homentropic flows is equation (30), which can be used to study lee waves.
The lack of early movement was attributed to the presence of a micro lowpressure zone and associated vortex created in the lee of the particle.
As the inertio-gravitywaves of zero frequency are evanescent, no waves are present in the lee of the obstacle.
