Loading...
Search for:
development-length
0.008 seconds
Numerical computation of compressible laminar flow with heat transfer in the entrance region of a pipe
, Article 2008 ASME Summer Heat Transfer Conference, HT 2008, Jacksonville, FL, 10 August 2008 through 14 August 2008 ; Volume 3 , 2009 , Pages 445-454 ; 9780791848487 (ISBN) ; Nouri Broujerdi, A ; Seume, J ; Sharif University of Technology
2009
Abstract
The authors' research work on pressure drop along gas transmission pipelines raised questions regarding the development length of the corresponding compressible flow and the effect of heat transfer in the entrance region on the pressure drop along the whole length of the pipe. In this paper, laminar, viscous, compressible flow in the entrance region of a pipe is investigated numerically in two dimensions. The numerical procedure is a finite-volume based finite-element method applied on unstructured grids. This combination together with a new method applied for boundary conditions allows accurate computation of the variables in the entrance region. The method is applied to some incompressible...
Enhancement of bond characteristics of ribbed-surface GFRP bars with concrete by using carbon fiber mat anchorage
, Article Construction and Building Materials ; Volume 134 , 2017 , Pages 507-519 ; 09500618 (ISSN) ; Bazli, M ; Vatani Oskouei, A. V ; Sharif University of Technology
Abstract
The bond of fiber-reinforced polymer (FRP) reinforcement is expected to be more sensitive to the strength and geometry of the ribs than conventional steel reinforcement. In this study, the effect of carbon fiber mat anchorage on the pullout behavior of glass fiber-reinforced polymer (GFRP) bars embedded in normal concrete is studied. The studied parameters were the compressive strength of the concrete (16 MPa, 24 MPa, and 37 MPa), and, the length and diameter of the anchorage. In total, 15 variables were studied. Ribbed GFRP bars with 10 mm nominal diameter and 80 mm embedment length, ld, (which is 8 times the bar diameter) were considered. Based on the results for concretes with the...