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中文摘要：
对于遵循Oldroyd B型本构律的非定常粘弹性流体流动问题,提出了一种稳定的有限元方法.同时,利用Brouwer不动点定理证明了逼近方程解的存在唯一性.
英文摘要：
For the unsteady viscoelastic fluid flow obeying an Oldroyd B type constitutive law, we present a stable finite element method. At the same time, we show that the approximate problem has a unique solution by Breuwer＇s fixed point theorem.
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