مشروع البحث: Hydrodynamics of Turbulent Bores Propagating Over a Canal
تحميل...
المساهمين
الممولين
رقم التعريف
699
الباحث
نوري الطاهر الشيخ
الوصف
The third objective of this study dealt with a sequence of numerical experiments conducted to investigate the impact
of mitigation canals on the hydrodynamics of a tsunami-like turbulent bore moving across a flat bed. The effects of
mitigation canal depth and its orientation on the reduction of maximum specific momentum and energy of turbulent
bores crossing over it were investigated numerically. Variations in the ratio between the downstream and upstream
maximum specific momentum and mean flow energy decreased as the canal depth increased, and the time history of
the mean flow energy over a canal with a rectangular endwise profile revealed that the canal depth affects the jet
stream of the maximum mean flow energy. As the canal depth increased, the period of time needed to dissipate the
area of the jet stream with the maximum turbulent kinetic energy, vorticity, and energy dissipation rate decreased.
Both the angled and perpendicular to flow direction canals caused the maximum specific momentum and energy of
the turbulent bore to decrease downstream of the canal. The specific momentum and energy achieved their highest
values for a canal orientation of 45º. The greatest reductions in maximum specific momentum for turbulent bores over
canals with different depths and orientations were achieved for 𝜃 = 30°.
الكلمات الدالة
Hydrodynamics