Jafar Al-Muhammad

• Doctor of Engineering
• French National Institute for Agriculture, Food, and Environment (INRAE)

Small serpentine-shaped channels used in drip irrigation is an efficient irrigation technique in order to spare water. Eventual clogging in such micro channels should be avoided to extend the lifetime of these irrigation systems. Clogging often occurs when sedimentation takes place in low or zero velocity regions in steady laminar flow conditions....

Small serpentine-shaped channels used in drip irrigation is an efficient irrigation technique in order to spare water. Eventual clogging in such micro channels should be avoided to extend the lifetime of these irrigation systems. Clogging often occurs when sedimentation takes place in low or zero velocity regions in steady laminar flow conditions....

Small serpentine-shaped channels used in drip irrigation is an efficient irrigation technique in order to spare water. Eventual clogging in such micro channels should be avoided to extend the lifetime of these irrigation systems. Clogging often occurs when sedimentation takes place in low or zero velocity regions in steady laminar flow conditions....

The labyrinth-channel is largely used in dripper systems. The baffles play an important role to generate the head losses and induce the flow regulation on the drip irrigation network. But they also develop vorticity regions where the velocity is low or zero. These vorticity regions promote the deposition of particles or other biochemical developmen...

To better understand the physical and biological clogging in drip-irrigation, a study was conducted on the impacts of hydrodynamic conditions on clay particle deposition and biofilm development in drippers using an optical method. A transparent milli-fluidic system composed of labyrinth channels was used to identify areas most susceptible to partic...

The baffle-fitted labyrinth-channel is largely used in drip irrigation systems. The existing baffles, which play an important role for generating head losses and ensure the flow regulation on the irrigation network, produce vorticity regions where the velocity is low or equal to zero. These vortices are likely to favor the deposition of particles o...

In the present context of increasing water scarcity, a better water use efficiency is essential to maintain a sustainable economical growth. Moreover, water use efficiency covers also important environmental and social issues. Micro-irrigation system has the best water efficiency, nevertheless, its use is not much widespread. In the world, this sys...

The baffle-fitted labyrinth channel is commonly used in micro-irrigation systems. The flow in this labyrinth channel has a rather low-Reynolds number. In addition, emitter clogging, which is the major drawback of the micro-irrigation technique, is significantly related to flow characteristics. In order to design an anti-clogging emitter with a good...

Dans le contexte actuel de raréfaction de l’eau, une meilleure efficacité de l’utilisation de l’eau est essentielle pour maintenir une croissance économique durable. De plus, l’utilisation efficiente de l’eau couvre également des questions environnementales et sociales importantes. La micro-irrigation offre la meilleure efficience, cependant, son u...

17th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, PRT, 07-/07/2014 - 10/07/2014