The paper analyses the effect of electrohydrodynamic (EHD) pumping on the control of natural circulation loops (NCLs). The two major objectives of the investigation are: finding the optimal configuration of an EHD pump and demonstrating that the NCL flow direction can be inverted by exploiting the EHD phenomena. In the initial experimental set-up, we measured the static pressure rise given by a...

Sponges play a key role in the transfer of energy and nutrients into many benthic ecosystems, volume water they process is an important regulator these fluxes. Theoretical scaling relationships between sponge volume, osculum cross-sectional area, pumping rates were recently proposed confirmed for small specimens lab. To examine how apply to field populations we measured, situ , rate (PR) 20 spe...

the modulation response, relative intensity noise and frequency noise characteristics of qd lasers are investigated theoretically, in presence of an additional optical pumping. it is revealed that the modulation response of qd laser enhances under additional optical beam. by small signal analysis of the carriers' and photons' rates, it is proposed that by injecting excess carriers to ...

Saltwater intrusion and upconing phenomena affect coastal aquifers worldwide. Over-exploitation leads to high salinity levels which threaten sustainable use of these freshwater resources. There is an increasing need to accurately, and practically, model the physics of these coastal pumping systems while also incorporating the relevant economics. We formalize a decision model able to define the ...

The purpose of this project was to evaluate the performance and capabilities of the TiSP3, a titanium sublimation pump located at three meters from the interaction point of CESR. Maximum pumping speed obtainable, the optimal number of filament flashes, and the pumping capabilities of a nitrogen-saturated chamber were investigated. Introduction The Cornell Electron Storage Ring (CESR) stores a c...