{"product_id":"mathematical-modeling-of-unsteady-flow-for-al-kahlaa-regulator-river-von-ameera-mohamad-awad-saleh-issa-khassaf","title":"Mathematical Modeling of Unsteady Flow","description":"\u003cp\u003eThe study of the river flow predictions in open channels is an important issue in hydrology and hydraulics . Consequently, this paper is concerned with studying the unsteady flow that may exist in open channel , and its mathematically governed by the Saint Venant equation using a four-point implicit finite difference scheme. From many hydrologic software, HEC-RAS (Hydrologic Engineering Center ¿ River Analysis System) is a good choice to develop the hydraulic model of a given river system in the south of Iraq represented by Al- Kahlaa River by a network of main channel and three reach and a total of 57 cross sections with 3 boundary sections for one of the applications . The model was calibrated by using the observed weekly stage and flow data . The results show that a good agreement was achieved between the model predicted and the observed data by using the values Manning's(n=0.04) for over bank with the values of Manning's ( n=0.027) for main channel and also with using time weighting factor ( ¿ ) equal one .\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783330803732\"\u003e\u003ch3\u003eFor AL- Kahlaa Regulator River\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Softcover - 9783330803732","offer_id":39428945608797,"sku":"9783330803732","price":55.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/c15e6984-ab45-40d3-8fbe-dbd2360246f9.jpg?v=1773120373","url":"https:\/\/shop.autorenwelt.de\/products\/mathematical-modeling-of-unsteady-flow-for-al-kahlaa-regulator-river-von-ameera-mohamad-awad-saleh-issa-khassaf","provider":"Autorenwelt Shop","version":"1.0","type":"link"}