TY  - EJOU
AU  - He, Yuming 
AU  - Chen, Jie 
AU  - Jiao, Yubo 
AU  - Wang, Wei 

TI  - Linearization	Solution	and	Component	Tracking	of	Natural	Gas	Pipeline	 Transient	Simulation
T2  - The International Conference on Computational \& Experimental Engineering and Sciences

PY  - 2023
VL  - 26
IS  - 2
SN  - 1933-2815

AB  - In	present	study,	a	fast	simulation	algorithm	based	on	linearization	is	used	to	simulate	the	flow	parameters	
of	 the	 natural	 gas	 pipeline	 under	 transient	 operating	 conditions,	 analyze	 the	 impact	 of	 natural	 gas	
components	on	the	transient	operation,	and	conduct	the	tracking	calculation	of	natural	gas	components [1-
3].	 Under	 the	 condition	 that	 the	 simulation	 calculation	 accuracy	 is	 not	 affected,	 the	 first-order	 Taylor	
linearization	expansion	method	is	used	to	linearize	the	transient	simulation	model	of	natural	gas	pipeline,	
while	 the	 second-order	 implicit	 difference	 dispersion	 method	 is	 used	 to	 obtain	 the	 linearized	 discrete	
equations	 without	 initial	 value	 selection	 and	 multiple	 iterative	 solutions,	 thus	 greatly	 improving	 the	
simulation	 efficiency.	 In	 the	 same	 time	 layer,	 the	 fast	 simulation	 algorithm	 of	 transient	 linearization	 of	
natural	gas	pipeline,	the	convection	equation	of	gas	components	and	the	gas	physical	property	parameter	
model	 are	 coupled	 to	 realize	 the	 component	 tracking	 calculation	 of	 natural	gas	 trunk	 pipeline.	 Through	
transient	flow	simulation	and	component	tracking,	the	distribution	of	each	gas	component	along	the	pipeline	
and	the	variation	of	gas	physical	properties are	characterized,	with	the	purpose	of	providing	reference for	
the	safe	operation	and	accurate	measurement	of	the	natural	gas	pipeline.
KW  - Natural	gas	pipeline;	linearization;	implicit	difference;	component	tracking;	transient	flow

DO  - 10.32604/icces.2023.09061