الباحثون

Kamel Nafa

· ORCID 0000-0001-7463-6165

المنشورات 2

مقال بحثي وصول مفتوح

A New Second Order Approximation for Fractional Derivatives with Applications

Haniffa Mohamed Nasir, Kamel Nafa · مجلة جامعة السلطان قابوس للعلوم · 2018 · 10.24200/squjs.vol23iss1pp43-55

We propose a generalized theory to construct higher order Grünwald type approximations for fractional derivatives. We use this generalization to simplify the proofs of orders for existing approximation forms for the fractional derivative. We also construct a set of higher order Grünwald type approximations for fraction …

مقال بحثي وصول مفتوح

Local Projection Stabilization Method for Incompressible Flow Problems

A.M. Essefi, Kamel Nafa · مجلة جامعة السلطان قابوس للعلوم · 2012 · 10.24200/squjs.vol17iss2pp187-199

We analyze Local Projection Stabilization (LPS) methods for the solution of Stokes problem using equal order finite elements. We investigate their convergence, stability and accuracy properties. The resulting stabilized method is shown to lead to optimal rates of convergence for both velocity and pressure approximation …

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