erfc(x)近似公式及其在求解地下水运移参数中的应用

摘要

Based on the derivation of erfc(x) approximation,a new method is introduced to determine groundwater transport parameters in this paper.To test the reliability of the method in practices,pressure transitivity and hydrodynamic dispersion coefficients are computed for two cases.The result shows that the method to determine parameters by approximating erfc（x） is accurate.%推导了erfc(x)近似公式，引进了求解地下水运移参数的新方法.为验证该方法在实际求参中的可靠性，通过两个实例，用erfc(x)近似公式计算了压力传导系数和水动力弥散系数，计算结果表明该方法的精确性和实用性.