DISCRETE PHASE APPROACH FOR NANOFLUIDS FLOW IN PIPE
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL, STRUCTURAL AND MECHANICAL ENGINEERING
Author(s): GOUTAM SANYAL , MANOSH C. PAUL
Abstract: Nanofluid is known as a new generation of fluid and it has been introduced almost several decades ago. But its effectiveness in practical thermal engineering applications has started to diminish with time due to the several factors such as physical instability, complex procedure for production of nanofluids and its cost, instability of suspension of nanoparticles into a base fluid, choice of thermophysical properties and reliability of nanofluids. To overcome these problems, two different phases such as a base fluid (water) and nanoparticles can be considered instead of a typical nanofluid which actually acts like a fluid-solid mixture. However, the interaction between the fluid and particles needs to be investigated to assess its performance. In the present work, Eulerian- Lagrangian discrete phase model has been used with temperature dependent thermophysical properties of the base fluid (water) and nanoparticles to study the thermal performance behaviour of Al2O3 and TiO2 nanoparticl
- Publication Date: 17-Nov-2014
- DOI: 10.15224/978-1-63248-054-5-59
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THE EFFECT OF FREEZE-THAWING ON STEEL FIBER-MATRIX BOND CHARACTERISTICS OF CEMENT BASED COMPOSITES
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL, STRUCTURAL AND MECHANICAL ENGINEERING
Author(s): AHSANOLLAH BEGLARIGALE , MUHAMMER KESKINATES
Abstract: A frost resistance is required for the concrete and reinforced concrete elements such as girder bridges, dams, concrete paving and airport runways in cold climatic zones. The water in the capillary spaces of concrete is freezes and expands when subjected to frost effect water-saturated hardened concrete. The expansion amount at the end of re-freezing subsequent dissolving increases cumulatively. If the stress caused by expansion exceeds the tensile strength of concrete, distortion such as cracking, disintegration are occurred in concrete. In this study; the freeze-thaw effects on bond strength of reactive powder concrete (RPC), normal concrete and mortar were studied. The effect of maximum aggregate diameter, chemical additives, water/binder ratio, steel fiber and curing conditions on bond strength were determined. The fiber-matrix bond strength and mechanical properties of control samples compared with specific freeze-thaw cycle exposed samples
- Publication Date: 17-Nov-2014
- DOI: 10.15224/978-1-63248-054-5-99
- Views: 0
- Downloads: 0