obtaining temperature distribution data of slabs under rolling is essential as the mechanical and metallurgical properties of the metal under this process vary with temperature. using the control volume method, a mathematical model is employed in this study to predict slab temperature in the hot roll process at mobarakeh steel company. the effects of different parameters including the heat resu...

The liquid metal flow and the solidification behaviours in a multi-cavity casting mould of two automotive cast parts were simulated in three dimensions. The commercial code, FLOW-3D® was used because it can track the front of the molten metal by a Volume of Fluid (VOF) method and allows complicated parts to be modeled by the Fractional Area/Volume Obstacle Representation (FAVOR) meth...

In this work, the characteristics of flow and heat transfer of a fluid containing nano particles of aluminum oxide with the water volume fraction (0.1-0.2-0.3)(V/V) percent of the reports. The overall heat transfer coefficient, heat transfer and the average heat transfer fluid containing nano water - aluminum oxide in a horizontal double pipe counter flow heat exchanger under turbulent flow con...

a mathematical model of a continuous reheating furnace has been developed to identify the design and operating parameters that significantly affect furnace performance. in this study, the furnace is modeled 3 dimensionally and themonte carlomethod is used to find the overall absorption factor. the overall absorption factor is then used to calculate the energy balance for furnace walls, the gas,...

basic understanding of the process of coolant heat transfer inside an engine is an indispensable prerequisite to devise an infallible cooling strategy. coolant flow and its heat transfer affect the cooling efficiency, thermal load of heated components, and thermal efficiency of a diesel engine. an efficient approach to studying cooling system for diesel engine is a 3d computational fluid dynami...

Due to the significant reduction in water droplet size caused by strong air-water interaction spray nozzle, air-mist is one of promising technologies for achieving high-rate heat transfer. This study numerically analyzed produced a flat-fan atomizer using three-dimensional computational fluid dynamics simulations, and multivariable linear regression was used develop correlation predict transfer...

Frequent delays will be experienced in the start-up of molten steel on converter equipment during steelmaking–continuous casting (SCC) production process due to untimely supply iron or scrap, which may cause conflicts between adjacent heat same casting. The machine is cut off, resulting failure static scheduling plan. SCC ladle re-scheduling based premise that path remains unchanged, operation ...

Present chemical-physical characteristics of ingot and continuous casting powders can be critically evaluated pointing out history of invention of these materials. In an original tone, pioneering nature of first developments of casting powders will be described, illustrating empirical know-how of casting powders technology, based on trial-and-error method. It will be originally emphasized that ...

bubble columns are gas- liquid contactors that are widely used in chemical and bio- chemical industries. high mixing that result in high heat and mass transfer rates are amongst their advantages. heat transfer in a bubble column having a bundle of heaters investigated and the variation of heat transfer coefficient with variation in heaters pitch to diameter ratios in a bundle of heaters reporte...

In continuous casting, molten steel is fed from the tundish into mold through immersion nozzle. nozzle, inclusions mainly composed of alumina present in adhere and accumulate, it causes limitation castings. To prevent nozzle clogging, Ar gas blown However, bubbles flow along with become trapped solidifying shell, causing bubbling defects slab. suppress defects, effective to keep away solidifica...