A numerical model for simulating Residence Time Distribution (RTD) of turbulent flows in helical static mixers is proposed and developed to improve the understanding of static mixers. The results of this model is presented in terms of different volumetric flow rate to illustrate the complicated flow patterns that drive the mixing process i...

Nowadays, numerous processes of any supply chain are done by suppliers and consequently they cause a massive amount of pollution released to the nature. Hence, greening the suppliers has become a necessity. Although most of green supplier development programs need high investment, formal optimization models that address this issue are very rare. This paper mainly aims to address this prob...

business clusters are known as a  new model of economic development throughout the world. in recent years, this model has also been noted by policy-makers in iran. accordingly, the present study aimed at proposing a model for sustainable development of business clusters in iran based on experience in this regard. a qualitative strategy (case study) is used as the research method. additionally, ...

abstract today, competitive strategies have got accepted as one of the most important means of manager to compete in markets. in the strategic management process, development of the strategic quantitative objectives based merely on the experts’ ideas.in this research, after reviewing the bsc,swot, judo strategy model and blue ocean strategy model, the concepts are applied to increase quality of...

unplanned urban development imposes significant pressure on land resources and land use structures and brings about many negative socio-economic and environmental consequences. therefore, comprehensive studies should be applied to support urban land use management in the world and especially in developing countries. in iran, like many other developing countries, urban development is fast and of...

customer satisfaction is the major concern to many leading companies throughout the world.customer satisfaction is the major concern to many leading companies throughout the world. more firms use satisfaction ratings as an indicator of the performance of products and services and as an indicator of the company’s future. as lately shown companies that are able to identify customer needs and alig...

this paper presents developing an analytical model for flux switching motors. the motor is a class of variable reluctance motors that has two windings on stator; a field winding and an armature winding. due to saliency of both stator and rotor poles, accurate modeling is difficult which arises from the nonlinear behavior of the machine. this paper presents a simple model which is able to predic...