noses by using the equivalent axisymmetric body (EAB) theory. This Code has been developed by researchers and the results of it have been validated by the various flight tests results. In the case of non-zero angle of attack or asymmetric surface ablation for each meriodinal plane, the equivalent meriodinal plane (EMP) is created for any meriodinal plane. The combinations of these planes consti...

A user-defined function (UDF) is a powerful database feature that allows users to customize database functionality. Though useful, present UDFs have numerous limitations, including install-time specification of input and output schema and poor ability to parallelize execution. We present a new approach to implementing a UDF, which we call SQL/MapReduce (SQL/MR), that overcomes many of these lim...

the effect of γ-al2o3 nanoparticles on heat transfer rate, baffle spacing and pressure drop in the shell side of small shell and tube heat exchangers was investigated numerically under turbulent regime. γ-al2o3-water nanofluids and pure water were used in the shell side and the tube side of heat exchangers, respectively. since the properties of γ-al2o3-water nanofluids were variable, they were ...

In this paper, numerical investigation of upward two phase flow of air-water has been studied. Different conditions of flow regimes including annular, wispy annular, slug, churn and bubbly are simulated based on Hewitt and Roberts map, and a good agreement between the experimental data of the map and the numerical simulation has been observed. Accordingly, a proper CFD model in CFD software of ...

Equipped with its Solver and-in and VBA, Microsoft Excel makes an ideal educational platform for design analyses of fluid-thermal systems. This paper illustrates this capability by considering a common type these systems; which is the double-pipe heat exchanger. While used optimisation analysis, VBA development user-defined function (UDF) that determines optimum standard-pipe size system.

Abstract For the sake of study applicability PEMFC on ships, a three-dimensional single channel fuel cell model was established. The vibration load loaded through dynamic grid technology and user-defined function (UDF) method. output voltage reactive gas distribution in different directions were compared analyzed. results show that ship will affect transmission components battery, resulting inc...

User Defined Functions (UDF) are an important feature of analytical SQL as they allow processing of data right inside of relational queries. Typically UDFs have to be written in a special language which sometimes diminishes their practical use, especially when required libraries are not available in this language. An alternative approach is to allow users to provide functions as native low-leve...

Cloud computing has demonstrated that processing very large datasets over commodity clusters can be done simply given the right programming model and infrastructure. In this paper, we describe the design and implementation of the Sector storage cloud and the Sphere compute cloud. In contrast to existing storage and compute clouds, Sector can manage data not only within a data center, but also a...

The major objective of the present study is to verify a method for FLUENT code applying user defined function (UDF) which enables coupling simulation neutronics and thermal-hydraulics molten salt fast reactor based on one-point kinetics. UDF with added logic control rod drive (CRD) linked analyze reactivity change when fuel pump MSRE was started tripped. These experiments were carried out under...