کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6954126 1451826 2018 27 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysis of continuous-contact helical gear pumps through numerical modeling and experimental validation
ترجمه فارسی عنوان
تجزیه و تحلیل پمپ دنده های دنده ای پیوسته با استفاده از مدل سازی عددی و اعتبار سنجی تجربی
کلمات کلیدی
پمپ های دنده خارجی پمپ های دنده های مارپیچ، پمپ دنده پیوسته، رشته جریان کینماتیک، مدل سازی پمپ، نویز پمپ، اعتبار تجربی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
چکیده انگلیسی
External gear pumps are one of the most commonly used types of positive displacement machines in high pressure hydraulic control systems, fuel-injection and fuel transport systems. Despite many merits of the traditional external gear pump design with involute teeth, the significant flow non-uniformity intrinsic of such design is considered to be a detrimental aspect, since it causes undesired noise emissions and mechanical vibrations. A disruptive concept of continuous-contact helical gear pumps (CCHGP) was proposed and successfully commercialized in the recent past. Such concept was proven to have clear advantages in terms of noise emissions. However, a clear interpretation of the displacing action and the transient features of the delivery flow was never addressed in past literature. This paper addresses this gap by first discussing the family of gear profiles suitable for implementing the CCHGP design. Subsequently, an analysis on the kinematic flow ripple is given, showing how such design concept can reduce or even eliminate the kinematic flow pulsations. The paper also presents a numerical approach for modelling the operation of CCHGPs, starting from the modeling of the geometric features necessary for a fluid dynamic analysis based on a lumped parameter approach. For model validation purposes, a commercial CCHGP was tested at the authors' research center, and the simulation results were compared against the experiments, to show the level of accuracy of the model, as well as it potentials for future design studies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanical Systems and Signal Processing - Volume 109, 1 September 2018, Pages 352-378
نویسندگان
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