A general view of the lobby outside of the Carlyle Group offices in WashingtonCarlyle Group LP has decided to liquidate the two mutual funds it launched last year, regulatory filings showed this week, as the private equity firm seeks other ways to gain more traction with so-called liquid alternative funds. Developing mutual funds has historically been challenging for private equity firms because the average buyout fund is illiquid, with a typical life span of 10 years. Next month, Carlyle will close Carlyle Global Core Allocation Fund, which has $50 million in net assets with a mandate to invest across equities, debt, real estate, commodities and currencies using exchange-traded funds, according to a filing with the U.S. Securities and Exchange Commission.