An expert system for analyzing urban stream stability and developing mitigation measures for stream instabilities is developed using principles of the geomorphologic, hydraulic, and hydrologic processes that occur in a stream system and their effects on the system upstream and downstream. The hydrologic and hydraulic aspects of the system that affect flow in the stream and often the sediment lo...

We consider tracking a doubly-selective channel given a transmission stream which alternates between data and pilot blocks. Current and previous pilots, as well as previouslydecoded data blocks, are used for estimation of channel parameters. The optimal Kalman and Wiener estimators for this scenario are computationally expensive. In response, we propose a novel two-stage estimation technique wh...

The BASINS (Better Assessment Science Integrating point and Non-point Sources, Release 2) system, created under the auspice of the U.S. Environmental Protection Agency (EPA), uses An'Vie\\, as a framework to integrate several hydrologic/hydraulic and water quality models. The BASINS system also includes a national stream characteristic database that contains reach-scale data on mean stream widt...

Stream channelization, which entails reducing the sinuosity of a stream, widening, and in some cases deepening stream channel, is widespread practice agricultural regions. Channelization efforts central Illinois have significant impacts on geomorphology, flow regime, sediment transport both adjacent to modified reaches. The goal this study was characterize changes channels by comparing three st...

This study presents an innovative and simple way to increase the rate of heat transfer in a spiral plate heat exchanger model. Several circular cross-section rods, as continuous vortex generators, have been inserted within the spiral plate heat exchanger in the cross-stream plane. The vortex generators are located at various azimuth angles of α=30◦, 60◦, 90◦, and 120◦ with non-dimensional diame...

Fluvial processes and channel development on landscapes have recently received more attention as designers attempt to establish or replace natural streams on disturbed or degraded sites. Several approaches using similar parameters have been developed to evaluate stream development and erosion processes on natural soils and landscapes. Such approaches include the Manning’s and stream power equat...