Page No : 1-9
Computational Fluid dynamics analysis and validation of the effect of angle of inclination of the pipe on temperature of the fluid for Constant surface temperature condition
The main intent of this research work is to find out the contribution of angle of inclination on flow of fluid in a pipe and to study comparative analysis of various viscous model. A comparative analysis is done containing the data of test of a pipe with inclination such as 0o, 30o, 45o, 60o and 90o to determine the competence of the laminar and various turbulent model such as Standard K-epsilon, RNG K-epsilon and K-Omega in CFD. Models of pipe with inclination 0o, 30o, 45o, 60o and 90o are created in ANSYS SPACECLAIM, meshing is done with help of grid sensitivity analysis and the analysis is carried out in ANSYS FLUENT. In order to determine the validity of the models developed and simulation results and the outlet temperature of the fluid in a pipe with 0o, 30o, 45o, 60o and 90o have been gathered and selected laminar and various pertinent turbulent model such as Standard K-epsilon, RNG K-epsilon and K-Omega which generated results close to data of test. The pipe is subjected to constant surface temperature. It can be noted that the contribution of the angle of inclination of the pipe is not significant on the temperature of the fluid flow in the pipe and the experimental outlet temperature of the fluid in the pipe with 0o, 30o, 45o, 60o and 90o is matched with K Omega model results. This research work confirms that the numerical analysis validation and created models useful in the design and performance of the pipe.
MATHA PRASAD ADARI , ADARI MATHA PRASAD.
Page No : 10-19
PERFORMANCE ANALYSIS OF RECRON -FIBER REINFORCED CONCRETE USING POZZOLONAS & STUDY OF STRENGH CHARACTERISTICS
Concrete is the most widely used man-made construction material in the world. It is obtained by mixing cementitious materials, water, aggregate and sometimes admixtures in required proportions. The Ordinary Portland Cement (OPC) is one of the main ingredients used for the production of concrete and has no alternative in the civil construction industry. High-performance concrete is concrete that meets special combinations of performance and uniformity requirements that cannot always be achieved routinely using conventional constituents and normal mixing, placing, and curing practices. The strength, durability and other characteristic of concrete depends on the properties of its ingredients, proportion of mix, method of compaction and other controls during placing and curing. A high-strength concrete is always a high-performance concrete, but a high-performance concrete is not always a high-strength concrete.
Cube specimens, Cylinder and prisms were cast to test compression, split tensile strength and flexural strength of both mixes at 7days and 28days of curing. Results indicate that improved strength at all ages with addition of fibre using mineral admixures.
A.ADINARAYAN , Gangidi kranthikumar.
Page No : 20-30
A fast hardware implementation for approximate Log and antilog computations
The proposed present work is an approach to compute logarithmic and antilogarithmic values getting on FPGA (in hardware). Approach is based on a lookup table, followed by an interpolation step. The interpolation step is implemented in combinational logic, in a field-programmable gate array (FPGA), resulting in an area-efficient, fast design. To compare this work with existing methods, and show that approach results in significantly lower memory resource utilization, for the same approximation errors. Also this method scales very well with an increase in the required accuracy, compared to existing techniques. This approach provides a good solution for field-programmable gate array (FPGA)-based applications that require high accuracy with a low cost in terms of required lookup table (LUT) size. Such applications include LNS, DSP cores, etc.