Journal of Food, Agriculture and Environment

Boundary shear stresses in smooth channels

Author(s):

Babak Lashkar-Ara ¹, Manoochehr Fathi-Moghadam ^2*, Mahmud Shafai-Bajestan ³, Arash Jael ⁴

Recieved Date: 2009-10-17, Accepted Date: 2009-12-08

Abstract:

Experiments were conducted to investigate the distribution of boundary shear stress and boundary shear force on a smooth rectangular channel bed and walls. The boundary shear stress was measured using a 4-mm diameter Preston tube connected to a differential pressure transducer and a data acquisition system. The calibration curves proposed by Patel were used to convert the pressure readings to shear stress. The results were adjusted by the total shear force calculated from the energy method. A nonlinear regression-based technique was carried out to analyse the results and develop equations to determine the percentage of wall and bed shear force on the wetted perimeter of smooth rectangular channels. The proposed equations were compared with previous studies, and results have shown a high correlation coefficient and small standard deviation.

Keywords:

Shear stress, wall shear force, Preston tube, smooth channel

---

Journal: Journal of Food, Agriculture and Environment
Year: 2010
Volume: 8
Issue: 1
Category: Environment
Pages: 343-347

---

Full text for Subscribers

---

Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

---

Purchase this Article:   20 Purchase PDF Order Reprints for 15

---

Share this article :