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Showing 2 results for Khakzand


Volume 9, Issue 3 (Autumn 2019)
Abstract

At present, the principles and patterns of mosque shaping and its symbolic look have been forgotten, especially at the level of neighbourhood mosques. Since the restoration of Iranian-Islamic architecture and urban identity is one of the tasks of contemporary architects and urban planners, therefore, the purpose of the present study was identifying features, principles and values existing and influenced by Islamic verses and hadiths in mosques architecture and urban planning, as well as adapting them to the needs of the contemporary period and modelling the values of beyond place and time mosques. In the present study, a survey method had been designed to investigate the effect of sensory perception models on satisfaction and desirability increase in neighbourhood mosques of Qazvin City. After explaining the models and components of sensory perception, the criteria for effective assessment of satisfaction increase in mosques were extracted and the questionnaire was adjusted according to the Likert spectrum, and structural equation modelling (SEM) method analyzed the relationships between variables and their impact. The findings of the study show that there is a significant relationship between the components of sensory perception and satisfaction in neighbourhood mosques, in which the impact of cultural indicators and social system existing in the neighbourhood was more than other indicators. As a result, observing the sensory patterns in the design of the mosque's constituent elements increases the spatial utility, which creates and reinforces adaptive sensory architecture patterns in religious space and increases the motivation of worshipers to continue attending neighbourhood mosques.
 

Tohid Khakzand, Ramin Kouhikamali, Javad Mahmoudimehr,
Volume 17, Issue 2 (3-2017)
Abstract

Spray combustion is utilized in a number of engineering applications such as energy conversion, military industrial, furance and propulsion devices. Current work focused on the effect of liquid fuel droplet diameter on the efficiency of the combustion chamber and formed emission such as NOx and CO in a two-dimensional axisymmetric combustion chamber. The discrete phase model approach employed for simulating Combustion. The gas phase is simulated using an Eulerian approach; while the droplets are treated with a Lagrangian method. The coupling between the two phases and effect of radiation is considered. The mixture-fraction/probability density function (PDF) equilibrium chemistry model is used to predict the combustion of the vaporized fuel. Also, the conservative equations of mass, momentum and energy in the turbulent flow field were solved in conjunction with the k–ε two equation turbulence model. A numerical simulation was carried out to study the influence of droplet size on the formation and emission of NOx and other contaminants. This effect was investigated under different droplet diameter and type of injection. The following conclusions be drawn: Smaller droplets produce higher NOx emission than the larger ones. Larger droplets produce higher CO than Smaller ones.

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