Donglei Jiang¹, Heng Wang¹, Huan Diao¹, Tan Xiao¹, Yi Yu¹, Chunmin Zeng¹, Rui Zhang^2,*, Qi Huang², Mingbo Wang²

FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.2, pp. 315-327, 2023, DOI:10.32604/fdmp.2022.020221

Abstract L1 is one of the largest offshore gas fields currently under development. In order to optimize the related design, nodal analysis is applied (including proper consideration of the plant productivity, sensitivity to the tubing size, erosion effects, liquid carrying performance, and tubing string). As a result of such approach, it is shown that 13Cr material should be chosen as the appropriate tubing material. Moreover, 3-1/2 inches 9.3 lb/ft N80 tubing, 4-1/2 inches 12.75 lb/ft N80 tubing, 5-1/2 inches 17 lb/ft N80 tubing should be used for a gas production rate under 80 × 10⁴ m³/d, between 80 × 10⁴ m³/d and 120 × 10⁴ m³/d and above 120 × 10⁴ m³/d,… More >

Ali Bekir Yildiz¹

CMES-Computer Modeling in Engineering & Sciences, Vol.75, No.1, pp. 33-42, 2011, DOI:10.3970/cmes.2011.075.033

Abstract The generalized method for determination of time constants of linear circuits is introduced. Nodal and mesh analysis, conventional methods whose applications are simpler than the state-space formulation, are used in obtaining the system equations. The approach is based on the use of the relationship between transfer functions and system equations of linear circuits, obtained by the conventional methods. The examples of active and passive circuits are given to illustrate the method. More >