Plant Thermal Environment On The Hull Component Simulation Of Temperature Distribution

At present,with the development of Marine industry,many of countries are very interested in the widening of the depth and breadth of the ocean,even the aspects of energy and water. Inevitably,the development of the Marine accompanied by the development of the shipbuilding industry.As a result, each country is becoming more and more high to the requirement of ship construction on both the aspects of military and civilian,and the requirements of the hull tonnage unmber also more and more big.It means that when increases the volume of the ship,the contact area of the water and air also increases,consquently,the corrosion is more serious.Hence,the importance of hull coating is becoming more and more obvious.In this paper,we calculate the regulartion of temperature distribution and airflow on the surface of the workpiece in the fixed scale plants,which use the numerical simulation and in order to judge the result whether conform to the requirements of the coating, finally points out the insufficient and put forward the further improvement.According to file data of the manufacturer,use of STAR-CCM+ technology and choice of the STAR-3D-CAD function to file a model.The description and the corresponding parameters are described below:The main plant dimensions:length 80m, width 30m, height of about 12m under the ceiling board(The default modle has no doors and windows).The exhaust port layout unilateral wall in 30m width width direction,the size: 2000mm×1000mm, height from the ground is about 500mm, total of 5 evenly distributed. Total exhaust volume:160000m3/h.The air supply inlet layout on both side of the wall in 80m length direction,Total exhaust volume:80000m3/h.Natural air inlet layout on the roof,the size:?2000mm,height from the ground is about 12m,total of 7 evenly distributed.Inlet air temperature:-10??Air volume:80000 m3/h.Choose standard k-?,SSTK-? turbulent model for a comparing simulation study,which on the basis of the established model and under the conditions of different positions and different numbers of inlets and exhaust outlets.According to the flow simulation analysis,get the the different effect of air flow and temperature distribution in the rendering under the conditions said above.Compare the resulting renderings, the analysis shows that the effect on both sides wall have double row of air distribution in lentgth direction is much better than that only have one row of air distribution when the air output from roof unchanged.Place a hull artifacts in the plant,on the basis of both sides in large workshop have double rows of air distribution in lentgth direction and under the specific indicators of air supply,go on a simulation about airflow velocity distribution around the workshop and the workpieces' surface temperature after haveing a fluid-solid coupling with around air.Through the analysis,we can get the conclusion that it conform to the requirements of the coating,and understand some features of fluid-structure coupling.Through the research results we can conclus that it can get a detail result of temperature distribution and flow field velocity distribution in comparison when have a numerical simulation of building fluid-solid coupling by using a computational fluid dynamics software STAR-CCM and the result of numerical simulation is valuable to some extent.