简介：Flushingpipeoutletsareprovidedatthefloorofsedimentationbasinsforflushingoutofthedepositedsediments.Theseoutletshavetobepositionedinsuchawaysoastoremovethedepositedsedimentseffectively.Intheabsenceofrationalmethodforthelocation,presentlytheoutletsarelocatedbyjudgment.Areviewofliteratureindicatedthatthereisnojudiciousmethodavailableforobtainingtheoutletdiameter.Presentedhereinarethedesignequationsfortheflushingoutlets.Itishopedthattheequationwillbeusefultothedesignengineers.

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简介：沉积氧需求(草皮)是为水质量分析并且为在河，湖，河口和海湾里当模特儿的水质量的一个关键参数。草皮能在实验室并且在situ被测量。然而，在里面situ技术看起来是为测量草皮，，的更好的途径它可能提供更代表性、精确的结果。以便优化设计在situ草皮测量房间，在圆柱的草皮测量房间的三维的流动地，通常使用为在situ大小，被使用基于RNG的k-数字地模仿了两倍方程骚乱模型。有三种不同流入管子配置的草皮房间被调查。结果证明那房间III在另外的图案上介绍明显的优点为在situ草皮测量，因为好流动混合能被完成，底部沉积暂停能在房间被避免。数字模拟结果被比较验证，存在结果源于实验室实验。设计反映数字模拟的结果的草皮测量房间成功地被测试为在新鲜、盐的水里的situ草皮大小。

简介：Itisacommonpracticetouseahydrologicalcontinuityequationasthegoverningequationindetentionponddesign.Althoughthedetentionvolumecanbeevaluatedusinganumericalmethodandcomputerprogram,theyarenotavailableforengineerstousebecauseofthedifficultyinvolvedinthenumericalevaluationorthecomputerprogrammaynotbereadyforengineers.Thisstudyintendstoprovideaformulaforcalculatingthevolumeofadetentionpond.Anonlinearcontinuityequationfordetentionponddesignisobtainedbyapplyingatriangular/trapezoidalinflowhydrographandspillwayororificefortheoutflowdevice.Thisperturbationmethodisemployedtoresolvetheequation.Afterdiscussingtheomissionandcurvefittingmethods,aformulafordetentionponddesignisproposed.Severalexamplesaredisplayedandahighagreementwiththenumericalresultisobtained.