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Volume :36 Issue : 1 2009      Add To Cart                                                                    Download

Simulation of cooling pipes effects in 2D matrix free Galerkin finite volume solution of temperature field during the construction of the gravity dams

Auther : S. R. SABBAGH-YAZDI*, F. M. WEGIAN ** AND K. DAVALLOU*

S. R. Sabbagh-YAZDI*, F. M. Wegian ** AND K. DAVALLOU*

*Civil Engineering Department, KN Toosi University of Technology, 19697 Tehran Iran

**Civil Engineering Department, College of Technological Studies (PAAET),

Email:  fmwm@yahoo.com

 

Abstract

 

In order to analyze temperature field and the effects of cooling pipe during the concrete hardening and gradual construction of the mass concrete structures, a temperature simulation model is developed using finite volume method. The formulation of the model is derived by application of the Galerkin method on the sub-domains which are formed by triangular elements. The algorithm considers gradual moving of the top boundary of the solution domain. The accuracy of the numerical model is assessed by comparison of the results with available analytical solutions and experimental measurements of heat generation and transfer in the two-dimensional square domains. Having verified the accuracy of described two-dimensional finite volume heat solver for solid state (i.e. concrete media), the effect of embedded cooling pipes are imposed using an efficient technique. The accuracy of developed model for simulation of heat generation and transfer combined with cooling pipes is assessed by modeling a thick concrete wall case which includes post cooling system with available measurements. Finally, the developed computer model is utilized to model the transient temperature field due to effects of cement hydration, cooling pipes, heat conduction, laminar construction, boundary conditions and ambient weather in various stages of construction of a typical gravity dam.

 

Keywords: Post cooling pipes, Galerkin finite volume Method, triangular meshes, concrete Temperature, gravity dam gradual construction

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