西南石油大学学报（自然科学版）2017，Vol.39Issue(3)：165-172,8.DOI:10.11885/j.issn.1674-5086.2015.06.14.02
基于奇点分布法的涡轮钻具叶型设计
Turbodrill Blade Profile Design Based on the Singularity Distribution Method
摘要
Abstract
In terms of blade profile design,using conventional methods for high-speed and small-diameter mrbodrills may be challenging in obtaining a satisfactory blade profile.However,the blade profile design for turbodrills using the singularity distribution method is worth pursuing.According to the design process,the number of turbodrill cascade blades,circulation around the airfoil,and velocity of the uniform inflow at infinity should first be calculated.The distribution pattern of the circulation density is then identified.Subsequently,the blade camber line of the turbodrill is designed and smoothened using a sextic polynomial.Moreover,the approach to thicken the blade profile along the blade camber line is investigated in accordance with the airfoil representation methods in the airfoil base,thereby obtaining a thickened blade profile.In addition,the method to calculate the tangent points between the thickened circle and the profile lines of the blade suction and pressure surfaces is determined to provide the coordinates required for blade manufacturing.Finally,the blade profile for a certain type of turbodrill is designed based on engineering data,and the computational fluid dynamics software is employed to simulate its flow field.The simulation results demonstrate the excellent performance of the designed blade profile,which proves the feasibility and effectiveness of the singularity distribution method in the blade profile design for turbodrills,particularly with respect to high-speed turbodrills.关键词
涡轮钻具/叶型/奇点分布法/叶型骨线/叶型加厚Key words
turbodrill/blade profile/singularity distribution method/blade camber line/blade profile thickening分类
能源科技引用本文复制引用
龚彦,张晓东,张也,李一岚,张津..基于奇点分布法的涡轮钻具叶型设计[J].西南石油大学学报（自然科学版）,2017,39(3):165-172,8.基金项目
石油天然气装备教育部重点实验室开放基金(OGE201403-20) （OGE201403-20）
西南石油大学校级科技基金(2013XJZ011) （2013XJZ011）
