發(fā)布時(shí)間：2018-08-25 20:23

【摘要】：建立河道三維水流和冷卻水及含放射性液態(tài)流出物三維數(shù)學(xué)模型,對(duì)某濱河核電廠冷卻水排放及含放射性液態(tài)流出物核素分布進(jìn)行數(shù)值模擬研究,分析廠址排水口附近的溫度場(chǎng)和濃度場(chǎng)的擴(kuò)散規(guī)律。研究結(jié)果表明:方程中考慮排放口的流量動(dòng)量,可合理反映擴(kuò)散管周邊的流態(tài);廠址獨(dú)特的河彎水力特性,使得不同擴(kuò)散管布置對(duì)排放物質(zhì)的稀釋結(jié)果影響不大;各方案0.1℃溫升線均未超過河道寬度的1/4,影響范圍枯水期最大、洪水期最小,溫升分布在排水口附近不均勻,但越往下游越均勻;下泄流量越大對(duì)核素的稀釋作用越大,各方案稀釋1 000倍時(shí)的影響長度均在3.5km左右;核素排放對(duì)上游影響很小,最大回溯距離不超過200m。這些結(jié)論可為工程設(shè)計(jì)、建設(shè)及運(yùn)行提供技術(shù)服務(wù),也對(duì)內(nèi)陸核電環(huán)境問題的相關(guān)研究具有參考價(jià)值。
[Abstract]:Three-dimensional mathematical model of river channel flow, cooling water and radioactive liquid effluent was established to simulate cooling water discharge and nuclide distribution of radioactive liquid effluent in a riverside nuclear power plant. The diffusion law of temperature field and concentration field near the drainage outlet is analyzed. The results show that considering the flux and momentum of the discharge outlet, the flow state around the diffusion pipe can be reasonably reflected in the equation, and the unique river bend hydraulic characteristics of the plant site make the different layout of the diffusive pipe have little effect on the dilution results of the discharge material. The temperature rise line of 0.1 鈩，

本文編號(hào)：2203998