Vng th: S LA CHN HNH TRNH, CN BNG, TI U

Mng li ca h thng vn chuyn th chng cht hn nng thn.

Hin tng n tc, bo ho rt nghim trng thnh th v khng th xem thng.NGUYN L WARDROPVn c th ca s la chn hnh trnh vng th

Lung tng th q trn mt ODTn ti 2 hnh trnh c th c phn ra thnh lung q1v lung q2Nh vy: q = q1 + q2NGUYN L WARDROPCc k hiu c s dng

Lm th no cc lung c phn b cn bng?

u l im ti u v mt x hi?

S cn bng c phi l ti u? NGUYN L WARDROPVn t ra

NGUYN L WARDROPChi ph l hm bin theo lu lng choHNH TRNH U TIN

NGUYN L WARDROPChi ph l hm bin theo lu lng choHNH TRNH TH HAI

NGUYN L WARDROPng cong chi ph cho HAI HNH TRNH

S phn b cc lung theo s cn bng:

Nu c t nht 2 lung (khc 0) trn mt OD th cn bng theo s lng c to ra khi c1=c2.

Thc t, nu c1

NGUYN L WARDROPS CN BNG ng cong chi ph ca hai lung khi cn bng:

S phn b cc lung theo ti u :

Tng chi ph l phn tng din tch ca cc hnh ch nht lung * chi ph.

Trn mi hnh trnh th lu thng s t tc trung bnh ca xe c. NGUYN L WARDROPS TI U

TI U: Gim thiu tng chi ph NGUYN L WARDROPS TI U

Ti u v Cn bng thng khng trng hp

Hnh trnh (mu xanh) ngn (thi gian cho qung ng khng ti rt t) nhng li dc (s n tc s xy ra kh nhanh).

Hnh trnh (mu ) di hn (thi gian cho qung ng khng ti lu hn) nhng rng hn (rt t b n tc trn phng din trng ti xem xt). NGUYN L WARDROPTI U & CN BNG

Tng chi ph im Cn bng NGUYN L WARDROPTI U & CN BNG

Tng chi ph im Ti u NGUYN L WARDROPTI U & CN BNG

HT