0
Research Papers: Flows in Complex Systems

The Effects of Splitter Plates on Turbulent Boundary Layer on a Long Flat Plate Near the Trailing Edge

[+] Author and Article Information
Yoshifumi Jodai

Department of Mechanical Engineering, Takamatsu College of Technology, 761-8058 Takamatsu, Japanjodai@takamatsu-nct.ac.jp

Yoshikazu Takahashi

Department of Mechanical Engineering, Takamatsu College of Technology, 761-8058 Takamatsu, Japantakahasi@takamatsu-nct.ac.jp

Masashi Ichimiya

Department of Mechanical Engineering, University of Tokushima, Japanichimiya@me.tokushima-u.ac.jp

Hideo Osaka

Department of Mechanical Engineering, Yamaguchi University, Japanohsaka@po.cc.yamaguchi-u.ac.jp

J. Fluids Eng 130(5), 051103 (May 01, 2008) (7 pages) doi:10.1115/1.2911683 History: Received August 29, 2007; Revised January 23, 2008; Published May 01, 2008

An experimental investigation has been made on a turbulent boundary layer near the trailing edge on a long flat plate. The flow was controlled by an additional splitter plate fitted to the trailing edge along the wake centerline. The length of the splitter plate, l, was varied from a half, to five times the trailing edge thickness, h. Measurements of base pressure behind the trailing edge and of mean velocity and pressure distribution in the turbulent boundary layer on the flat plate were made under the freestream zero-pressure gradient. The absolute value of the base pressure coefficient of the long flat plate was considerably smaller than that of the short flat plate without the splitter plate. A significant increase in the base pressure coefficient was achieved with the splitter plate (lh1), fitted to the long flat plate. Within an inner layer in the turbulent boundary layer near the trailing edge, the mean velocity increased more than that in the upstream position in the case without the splitter plate. With the splitter plate, however, the base pressure rise made the mean velocity distribution more closely approach that of a fully developed turbulent boundary layer.

FIGURES IN THIS ARTICLE
<>
Copyright © 2008 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Configuration of flow field and coordinate system

Grahic Jump Location
Figure 2

Base pressure coefficient. Uncertainty: less than 1% for base pressure ranging from about −40Pa(Cpb∼−0.3) to −15Pa(Cpb∼−0.1).

Grahic Jump Location
Figure 3

Normalized base pressure coefficient

Grahic Jump Location
Figure 4

Mean velocity profiles. Uncertainty: less than 2% for velocities ranging from 4m∕sto16m∕s(U∕Ue≒0.25–1) and around 5% for lower velocities.

Grahic Jump Location
Figure 5

Mean velocity excess

Grahic Jump Location
Figure 6

Static pressure coefficient. Uncertainty: around 1% and 4% for boundary-layer pressure −8Pa(Cp∼−0.060) and −2Pa(Cp∼−0.015), respectively.

Grahic Jump Location
Figure 7

Momentum thickness and Clauser’s shape parameter

Grahic Jump Location
Figure 8

Local skin friction coefficient. (a) cf for x∕h; (b) cf for Rθ.

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In