While a variety of high-speed transport protocols have been proposed to meet the requirement of high throughput data transfer over fast long-distance networks, less attention has been paid to the problems involved when those transport protocols are deployed in heterogeneously shared network environments like the global Internet. We are investigating several high-speed transport protocols: HighS...

Broadband access technologies such as xDSL and optical fiber have been removing the limits on bandwidth usage of end users and backbone networks could be heavily congested. Thus, it may happen that a limited number of users consume a large amount of network resources and deteriorates quality of other users. Therefore, fair bandwidth usage among end users is becoming more important criteria. The...

We have developed spectral methods in the discontinous Galerkin framework appropriate for simulations of high-speed flows in complex-geometry domains. In this paper we present details of the stability of the method and demonstrate the importance of over-integration for strongly nonlinear problems. We then present results from the application of the method to stability studies of supersonic and ...

Laboratory experiments demonstrate high-speed plasma flows from both footpoints of arched magnetic flux tubes, resulting in bulk plasma transport into the flux tube and persistent axial collimation even as the flux tube lengthens and kinks. The measured flows are in agreement with the predictions of hoop force and collimation models involving fundamental MHD forces. These forces are expected to...

The basic results obtained by the author in the theory of supercavities in compressible fluid have been presented. The modern numerical methods have been applied in this investigation and the basic correlations for shock in water have been considered. The characteristic features of supersonic cavitation flows and their difference from the analogous flows in the air have been noted. The buckling...

We have proposed a high-speed fluid-flow rate allocation scheme. We show that this method is well suited for ephemeral web-like traffic which is proliferating as network speed is increasing. We look at the flow level properties and packet level algorithm. We further discuss the equilibrium properties and show that this algorithm can achieve proportional fairness. The simulation results for both...