Subventions et des contributions :

Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019).

Air entrainment is a common concern in a number of water resource infrastructures. Water treatment facilitiesx000D
use bubbles (entrained air) to transfer gases such as ozone, oxygen, air, and carbon dioxide into water. Bubblesx000D
are also used in grit removal chambers to suspend light solids, while allowing heavier solids (grit) to settle outx000D
for removal. Modeling entrained air and sediment accurately is difficult mainly due to problems of properlyx000D
defining the bubble geometry and the complex interactions that occur between bubbles, sediment and water.x000D
NHC currently has an interest in applying OpenFOAM for projects involving air entrainment and sedimentx000D
transport.x000D
The principal objective of the proposed project is to demonstrate the successful implementation of bubblex000D
and sediment models in the open-source computational fluid dynamics (CFD) software OpenFOAM based onx000D
an open-channel flow case study. The secondary objective is to develop a simple methodology forx000D
incorporating OpenFOAM in NHC's day-to-day workflows which takes advantage of the developed airx000D
entrainment and sediment models.x000D
This collaboration between NHC and the Université de Sherbrooke (UdeS) will provide insights into howx000D
OpenFOAM can be effectively employed for complex hydrotechnical projects involving air and sediment. Thex000D
knowledge gained will enable NHC to bid on previously unattainable projects and allow NHC to be morex000D
competitive in its bid thus promoting its future viability. NHC will gain a technical advantage by using anx000D
open-source platform over other companies who depend on commercial software and excessive licensing fees.x000D
Assuring the competitiveness of Canadian owned companies like NHC is thus in the interest of Canada andx000D
Canada's economy.