Study on the influence of radius of curvature on flow resistance in spiral pipe

With the continuous development of west China, a new kind tunnel, namely spiral has appeared in expressway. Due to special linear pattern, resistance airflow tunnel been found change, but there are few relevant researches at present. Therefore, numerical calculation method is used study variation flow pipe with different curvature. The results show that when fluid flows pipe, wind speed not uniformly distributed. highest center on outside and offset distance decreases increase radius In addition, change studied, it rate curvature radius. It shows negatively correlated resistance.