September – October 2019 edition
International Journal of Academic Scientific Research
ISSN: 2272-6446 Volume 7, Issue 3
All listed papers are published after full consent of respective author or co-author(s).
For any discussion on research subject or research matter, the reader should directly contact to undersigned authors.
Numerical and experimental investigations of personal ventilation system in a cubicle
Mohammad Youssef Al Hashem, Ahmad Habib
Abstract: In this work, a numerical model was constructed to simulate the flow in a cubicle. This model was able to predict the physical phenomena and calculate the thermal comfort quantities correctly. An additional library was added to the software and used to calculate the age of the air, the cooling efficiency and the predicted mean vote PMV. The numerical model was validated after performing a mesh independence study by comparing its basic flow parameters with a valid numerical results, the average relative error in the temperature profile was 0.56%. An experimental model was also proposed and validated by comparing its results with experimental results, the average relative error in the temperature profile was 1.01%.
[Download] Pp 01-15
Hybrid Evolutionary Algorithm with Homotopy Perturbation Method for Solving Nonlinear Heat Transfer Equations
Bachir Nour Kharrat, Mohamed Khatib and Shaza Alturky
Abstract: In this paper, we present a hybrid method for solving nonlinear heat transfer equations, by using genetic programming (GP) with homotopy perturbation method (HPM). The main advantage of hybrid method is that the obtained solution leads to a small error solution at all points in the solution interval. While the resulting solution obtained by applying the traditional methods leads to error increase as we move away from the beginning of the solution interval. The solution that can be obtained by hybrid technique depends on generate initial approximation from GP then applied HPM to find other terms of the solution series. The results of the proposed technique are compared with standard HPM, which witnesses the effectiveness and viability of the suggested hybrid algorithm.
Theoretical Review for Implementation of Japanese 5S Technique in Service Organizations, and the Possibility to Apply it in Syrian Service Organizations
Mohannad Mohammad Saeed Alfarhan
Abstract: This study aimed to carry out a theoretical review of the most important literature related to workplace organization technique (5S) and to explore its benefits and implementation on service organizations. This technique, which appeared first in Japan, has been applied widely on different types of organizations in a large number of countries. To achieve the goal of the study it was followed the “basic study” method, where the data that related to (5s) technique were collected with taking advantage of previous studies and their results, The study finds many of the results including: (5s) technique is easy and simple tool, and can be applied in various types of organizations, and there are a lot of benefits resulting from the successful application of (5s) technique, and based on these results the study put several suggestions including the use of benchmarking style by Syrian service organizations to identify the experiences of implementation the (5s) technique, and Syrian service organizations (especially healthcare organizations) should apply this technique, the study suggested that further future studies on the (5s) technique should be done by the Syrian researchers.