›› 2010, Vol. 31 ›› Issue (9): 2978-2982.

• Numerical Analysis • Previous Articles     Next Articles

Typical examples of simple methods to find empirical formulas

MAO Ning，ZHANG Yao-liang   

  1. 1.Nanjing Hydraulic Research Institute, Nanjing 210024, China; 2. Jiangsu Tiandi Steel Structure Co. Ltd, Xuzhou, Jiangsu 221004, China
  • Received:2009-01-12 Online:2010-09-10 Published:2010-09-16

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Abstract:

The simple method to find empirical formula of the experimental and researched data which plotted on the coordinate paper of related function is not a straight line is described. As examples the relation curves plotted on log-paper semi-log paper and ordinary coordinate paper in hydraulics and soil mechanics are selected. With these typical curves the procedure of simple method to find empirical formula is expounded. Consequently the formulas of drag coefficient for immersed sphere body moving through water, settling velocity for silt and sand, settlement consolidation degree for soft foundation and specific yield are obtained.

Key words: empirical formula, relativity curve, drag coefficient, degree of consolidation, specific yield

CLC Number: 

  • TB 115
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